Colors Encyclopedia

Harmony system

British Racing Green Color Harmonies

British Racing Green harmonies from #004225: complementary #42001D, plus five harmony groups with CSS and contrast data.

British Racing Green is a cool green at hue 154°, saturation 100% and lightness 13%. The sets below keep those measurements visible while moving around the color wheel, making it easier to choose close hues, direct contrast or a wider token system.

JSON data ComplementaryAnalogousTriadicTetradicSplit ComplementaryMonochromatic
SourceBritish Racing Green · #004225
Groups6
Palette colors6
FamilyGreen

How the harmony works

British Racing Green Harmony Guide

British Racing Green harmonies are computed from hue relationships rather than subjective palette names. Complementary colors create direct contrast, analogous colors stay close to the source hue, triadic and tetradic groups add broader palette range, split-complementary colors soften contrast, and monochromatic variants keep the same hue for UI surfaces and states.

Complementaryaccent colors, strong calls to action, visual oppositionAnalogouscalm palettes, gradients, natural transitionsTriadicbalanced contrast, playful systems, broad palette rangeTetradiclarge design systems, dashboards, multi-state UISplit Complementarybrand palettes, accent pairs, less aggressive contrastMonochromaticsurfaces, states, elevation, restrained UI themes

Machine-readable data

Machine-Readable British Racing Green Harmony Data (JSON)

Structured harmony groups, source color metadata, CSS tokens, accessibility notes, and related API endpoints for British Racing Green.

AI-Ready Dataset v1.0.0
Luminance0.0403
Black text1.81:1AA Fail
White text11.63:1AA Pass
sourceColorCanonical source color
harmonyGroupsComplementary, analogous, triadic, tetradic, split-complementary, and monochromatic sets
signaturePaletteCompact harmony preview palette
semanticGroupsAI-ready harmony labels
useCasesDesign and retrieval contexts
accessibilityNotesContrast guidance for the source color
Download JSON Open API
Structured sections
Source color
{
  "slug": "british-racing-green",
  "name": "British Racing Green",
  "hex": "#004225",
  "url": "https://www.colorsencyclopedia.com/colors/british-racing-green/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/colors/british-racing-green.json"
}
Harmony groups
[
  {
    "key": "complementary",
    "label": "Complementary",
    "behavior": "maximum hue contrast",
    "bestUse": "accent colors, strong calls to action, visual opposition",
    "description": "Complementary harmony uses the color opposite the source hue. It creates the strongest direct relationship in the wheel, so it is best for accents, contrast anchors, and palettes that need immediate separation.",
    "colors": [
      {
        "hex": "#42001D",
        "name": "#42001D",
        "slug": null,
        "rgb": [
          66,
          0,
          29
        ],
        "hsl": [
          334,
          100,
          13
        ],
        "cmyk": [
          0,
          100,
          56,
          74
        ],
        "luminance": 0.0125,
        "contrast": {
          "black": 1.25,
          "white": 16.8
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": null,
        "apiUrl": null
      }
    ],
    "anchor": "british-racing-green-harmony-complementary"
  },
  {
    "key": "analogous",
    "label": "Analogous",
    "behavior": "neighboring hue movement",
    "bestUse": "calm palettes, gradients, natural transitions",
    "description": "Analogous harmony uses hues close to the source color. It keeps the palette visually connected and is useful for quiet interfaces, editorial color systems, and smooth background or gradient work.",
    "colors": [
      {
        "hex": "#004204",
        "name": "#004204",
        "slug": null,
        "rgb": [
          0,
          66,
          4
        ],
        "hsl": [
          124,
          100,
          13
        ],
        "cmyk": [
          100,
          0,
          94,
          74
        ],
        "luminance": 0.0391,
        "contrast": {
          "black": 1.78,
          "white": 11.78
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": null,
        "apiUrl": null
      },
      {
        "hex": "#003E42",
        "name": "#003E42",
        "slug": null,
        "rgb": [
          0,
          62,
          66
        ],
        "hsl": [
          184,
          100,
          13
        ],
        "cmyk": [
          100,
          6,
          0,
          74
        ],
        "luminance": 0.0384,
        "contrast": {
          "black": 1.77,
          "white": 11.88
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": null,
        "apiUrl": null
      }
    ],
    "anchor": "british-racing-green-harmony-analogous"
  },
  {
    "key": "triadic",
    "label": "Triadic",
    "behavior": "three evenly spaced hues",
    "bestUse": "balanced contrast, playful systems, broad palette range",
    "description": "Triadic harmony places colors around the wheel at equal intervals. It gives more range than analogous harmony while keeping a stable mathematical relationship between the selected hues.",
    "colors": [
      {
        "hex": "#260042",
        "name": "#260042",
        "slug": null,
        "rgb": [
          38,
          0,
          66
        ],
        "hsl": [
          275,
          100,
          13
        ],
        "cmyk": [
          42,
          100,
          0,
          74
        ],
        "luminance": 0.0081,
        "contrast": {
          "black": 1.16,
          "white": 18.07
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": null,
        "apiUrl": null
      },
      {
        "hex": "#422600",
        "name": "#422600",
        "slug": null,
        "rgb": [
          66,
          38,
          0
        ],
        "hsl": [
          35,
          100,
          13
        ],
        "cmyk": [
          0,
          42,
          100,
          74
        ],
        "luminance": 0.0254,
        "contrast": {
          "black": 1.51,
          "white": 13.93
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": null,
        "apiUrl": null
      }
    ],
    "anchor": "british-racing-green-harmony-triadic"
  },
  {
    "key": "tetradic",
    "label": "Tetradic",
    "behavior": "two complementary pairs",
    "bestUse": "large design systems, dashboards, multi-state UI",
    "description": "Tetradic harmony creates a four-color system from two complementary relationships. It is useful when a palette needs multiple roles, but the colors should be assigned carefully so one hue remains dominant.",
    "colors": [
      {
        "hex": "#040042",
        "name": "#040042",
        "slug": null,
        "rgb": [
          4,
          0,
          66
        ],
        "hsl": [
          244,
          100,
          13
        ],
        "cmyk": [
          94,
          100,
          0,
          74
        ],
        "luminance": 0.0042,
        "contrast": {
          "black": 1.08,
          "white": 19.37
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": null,
        "apiUrl": null
      },
      {
        "hex": "#42001D",
        "name": "#42001D",
        "slug": null,
        "rgb": [
          66,
          0,
          29
        ],
        "hsl": [
          334,
          100,
          13
        ],
        "cmyk": [
          0,
          100,
          56,
          74
        ],
        "luminance": 0.0125,
        "contrast": {
          "black": 1.25,
          "white": 16.8
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": null,
        "apiUrl": null
      },
      {
        "hex": "#3E4200",
        "name": "#3E4200",
        "slug": null,
        "rgb": [
          62,
          66,
          0
        ],
        "hsl": [
          64,
          100,
          13
        ],
        "cmyk": [
          6,
          0,
          100,
          74
        ],
        "luminance": 0.0492,
        "contrast": {
          "black": 1.98,
          "white": 10.58
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": null,
        "apiUrl": null
      }
    ],
    "anchor": "british-racing-green-harmony-tetradic"
  },
  {
    "key": "splitComplementary",
    "label": "Split Complementary",
    "behavior": "softened complementary contrast",
    "bestUse": "brand palettes, accent pairs, less aggressive contrast",
    "description": "Split-complementary harmony replaces the direct opposite with the two hues beside it. This keeps useful contrast while reducing the visual tension of a pure complementary pair.",
    "colors": [
      {
        "hex": "#42003E",
        "name": "#42003E",
        "slug": null,
        "rgb": [
          66,
          0,
          62
        ],
        "hsl": [
          304,
          100,
          13
        ],
        "cmyk": [
          0,
          100,
          6,
          74
        ],
        "luminance": 0.0151,
        "contrast": {
          "black": 1.3,
          "white": 16.13
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": null,
        "apiUrl": null
      },
      {
        "hex": "#420400",
        "name": "#420400",
        "slug": null,
        "rgb": [
          66,
          4,
          0
        ],
        "hsl": [
          4,
          100,
          13
        ],
        "cmyk": [
          0,
          94,
          100,
          74
        ],
        "luminance": 0.0125,
        "contrast": {
          "black": 1.25,
          "white": 16.8
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": null,
        "apiUrl": null
      }
    ],
    "anchor": "british-racing-green-harmony-split-complementary"
  },
  {
    "key": "monochromatic",
    "label": "Monochromatic",
    "behavior": "same hue, different values",
    "bestUse": "surfaces, states, elevation, restrained UI themes",
    "description": "Monochromatic harmony keeps the source hue and changes lightness. It is the safest system for tonal UI, cards, hover states, shadows, backgrounds, and subtle visual hierarchy.",
    "colors": [
      {
        "hex": "#009E5A",
        "name": "#009E5A",
        "slug": null,
        "rgb": [
          0,
          158,
          90
        ],
        "hsl": [
          154,
          100,
          31
        ],
        "cmyk": [
          100,
          0,
          43,
          38
        ],
        "luminance": 0.2519,
        "contrast": {
          "black": 6.04,
          "white": 3.48
        },
        "wcag": {
          "AA": [
            "#000000",
            "#1A1A1A"
          ],
          "AAA": []
        },
        "url": null,
        "apiUrl": null
      },
      {
        "hex": "#004225",
        "name": "British Racing Green",
        "slug": "british-racing-green",
        "rgb": [
          0,
          66,
          37
        ],
        "hsl": [
          154,
          100,
          13
        ],
        "cmyk": [
          100,
          0,
          44,
          74
        ],
        "luminance": 0.0403,
        "contrast": {
          "black": 1.81,
          "white": 11.63
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": "https://www.colorsencyclopedia.com/colors/british-racing-green/",
        "apiUrl": "https://www.colorsencyclopedia.com/api/colors/british-racing-green.json"
      },
      {
        "hex": "#000000",
        "name": "Black",
        "slug": "black",
        "rgb": [
          0,
          0,
          0
        ],
        "hsl": [
          0,
          0,
          0
        ],
        "cmyk": [
          0,
          0,
          0,
          100
        ],
        "luminance": 0,
        "contrast": {
          "black": 1,
          "white": 21
        },
        "wcag": {
          "AA": [
            "#FFFFFF",
            "#F5F5F5"
          ],
          "AAA": [
            "#FFFFFF",
            "#F5F5F5"
          ]
        },
        "url": "https://www.colorsencyclopedia.com/colors/black/",
        "apiUrl": "https://www.colorsencyclopedia.com/api/colors/black.json"
      }
    ],
    "anchor": "british-racing-green-harmony-monochromatic"
  }
]
Signature palette
[
  "#004225",
  "#42001D",
  "#004204",
  "#003E42",
  "#009E5A",
  "#000000"
]
Accessibility notes
[
  "Black contrast on British Racing Green: 1.81:1",
  "White contrast on British Racing Green: 11.63:1",
  "AA text options: #FFFFFF, #F5F5F5"
]
CSS tokens
":root {\n  --color-british-racing-green: #004225;\n  --british-racing-green-complementary-1: #42001D;\n  --british-racing-green-analogous-1: #004204;\n  --british-racing-green-analogous-2: #003E42;\n  --british-racing-green-triadic-1: #260042;\n  --british-racing-green-triadic-2: #422600;\n  --british-racing-green-tetradic-1: #040042;\n  --british-racing-green-tetradic-2: #42001D;\n  --british-racing-green-tetradic-3: #3E4200;\n  --british-racing-green-split-complementary-1: #42003E;\n  --british-racing-green-split-complementary-2: #420400;\n  --british-racing-green-monochromatic-1: #009E5A;\n  --british-racing-green-monochromatic-2: #004225;\n  --british-racing-green-monochromatic-3: #000000;\n}\n\n.palette-british-racing-green-harmony {\n  color: #FFFFFF;\n  background: linear-gradient(135deg, #004225, #42001D, #004204, #003E42, #009E5A, #000000);\n}"
Full JSON dataset 
{
  "datasetVersion": "1.0.0",
  "slug": "british-racing-green",
  "name": "British Racing Green",
  "hex": "#004225",
  "rgb": [
    0,
    66,
    37
  ],
  "hsl": [
    154,
    100,
    13
  ],
  "cmyk": [
    100,
    0,
    44,
    74
  ],
  "family": "green",
  "temperature": "cool",
  "tone": [
    "dark",
    "jewel-tone"
  ],
  "luminance": 0.0403,
  "contrast": {
    "black": 1.81,
    "white": 11.63
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  "sourceColor": {
    "slug": "british-racing-green",
    "name": "British Racing Green",
    "hex": "#004225",
    "url": "https://www.colorsencyclopedia.com/colors/british-racing-green/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/british-racing-green.json"
  },
  "harmonyGroups": [
    {
      "key": "complementary",
      "label": "Complementary",
      "behavior": "maximum hue contrast",
      "bestUse": "accent colors, strong calls to action, visual opposition",
      "description": "Complementary harmony uses the color opposite the source hue. It creates the strongest direct relationship in the wheel, so it is best for accents, contrast anchors, and palettes that need immediate separation.",
      "colors": [
        {
          "hex": "#42001D",
          "name": "#42001D",
          "slug": null,
          "rgb": [
            66,
            0,
            29
          ],
          "hsl": [
            334,
            100,
            13
          ],
          "cmyk": [
            0,
            100,
            56,
            74
          ],
          "luminance": 0.0125,
          "contrast": {
            "black": 1.25,
            "white": 16.8
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": null,
          "apiUrl": null
        }
      ],
      "anchor": "british-racing-green-harmony-complementary"
    },
    {
      "key": "analogous",
      "label": "Analogous",
      "behavior": "neighboring hue movement",
      "bestUse": "calm palettes, gradients, natural transitions",
      "description": "Analogous harmony uses hues close to the source color. It keeps the palette visually connected and is useful for quiet interfaces, editorial color systems, and smooth background or gradient work.",
      "colors": [
        {
          "hex": "#004204",
          "name": "#004204",
          "slug": null,
          "rgb": [
            0,
            66,
            4
          ],
          "hsl": [
            124,
            100,
            13
          ],
          "cmyk": [
            100,
            0,
            94,
            74
          ],
          "luminance": 0.0391,
          "contrast": {
            "black": 1.78,
            "white": 11.78
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": null,
          "apiUrl": null
        },
        {
          "hex": "#003E42",
          "name": "#003E42",
          "slug": null,
          "rgb": [
            0,
            62,
            66
          ],
          "hsl": [
            184,
            100,
            13
          ],
          "cmyk": [
            100,
            6,
            0,
            74
          ],
          "luminance": 0.0384,
          "contrast": {
            "black": 1.77,
            "white": 11.88
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": null,
          "apiUrl": null
        }
      ],
      "anchor": "british-racing-green-harmony-analogous"
    },
    {
      "key": "triadic",
      "label": "Triadic",
      "behavior": "three evenly spaced hues",
      "bestUse": "balanced contrast, playful systems, broad palette range",
      "description": "Triadic harmony places colors around the wheel at equal intervals. It gives more range than analogous harmony while keeping a stable mathematical relationship between the selected hues.",
      "colors": [
        {
          "hex": "#260042",
          "name": "#260042",
          "slug": null,
          "rgb": [
            38,
            0,
            66
          ],
          "hsl": [
            275,
            100,
            13
          ],
          "cmyk": [
            42,
            100,
            0,
            74
          ],
          "luminance": 0.0081,
          "contrast": {
            "black": 1.16,
            "white": 18.07
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": null,
          "apiUrl": null
        },
        {
          "hex": "#422600",
          "name": "#422600",
          "slug": null,
          "rgb": [
            66,
            38,
            0
          ],
          "hsl": [
            35,
            100,
            13
          ],
          "cmyk": [
            0,
            42,
            100,
            74
          ],
          "luminance": 0.0254,
          "contrast": {
            "black": 1.51,
            "white": 13.93
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": null,
          "apiUrl": null
        }
      ],
      "anchor": "british-racing-green-harmony-triadic"
    },
    {
      "key": "tetradic",
      "label": "Tetradic",
      "behavior": "two complementary pairs",
      "bestUse": "large design systems, dashboards, multi-state UI",
      "description": "Tetradic harmony creates a four-color system from two complementary relationships. It is useful when a palette needs multiple roles, but the colors should be assigned carefully so one hue remains dominant.",
      "colors": [
        {
          "hex": "#040042",
          "name": "#040042",
          "slug": null,
          "rgb": [
            4,
            0,
            66
          ],
          "hsl": [
            244,
            100,
            13
          ],
          "cmyk": [
            94,
            100,
            0,
            74
          ],
          "luminance": 0.0042,
          "contrast": {
            "black": 1.08,
            "white": 19.37
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": null,
          "apiUrl": null
        },
        {
          "hex": "#42001D",
          "name": "#42001D",
          "slug": null,
          "rgb": [
            66,
            0,
            29
          ],
          "hsl": [
            334,
            100,
            13
          ],
          "cmyk": [
            0,
            100,
            56,
            74
          ],
          "luminance": 0.0125,
          "contrast": {
            "black": 1.25,
            "white": 16.8
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": null,
          "apiUrl": null
        },
        {
          "hex": "#3E4200",
          "name": "#3E4200",
          "slug": null,
          "rgb": [
            62,
            66,
            0
          ],
          "hsl": [
            64,
            100,
            13
          ],
          "cmyk": [
            6,
            0,
            100,
            74
          ],
          "luminance": 0.0492,
          "contrast": {
            "black": 1.98,
            "white": 10.58
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": null,
          "apiUrl": null
        }
      ],
      "anchor": "british-racing-green-harmony-tetradic"
    },
    {
      "key": "splitComplementary",
      "label": "Split Complementary",
      "behavior": "softened complementary contrast",
      "bestUse": "brand palettes, accent pairs, less aggressive contrast",
      "description": "Split-complementary harmony replaces the direct opposite with the two hues beside it. This keeps useful contrast while reducing the visual tension of a pure complementary pair.",
      "colors": [
        {
          "hex": "#42003E",
          "name": "#42003E",
          "slug": null,
          "rgb": [
            66,
            0,
            62
          ],
          "hsl": [
            304,
            100,
            13
          ],
          "cmyk": [
            0,
            100,
            6,
            74
          ],
          "luminance": 0.0151,
          "contrast": {
            "black": 1.3,
            "white": 16.13
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": null,
          "apiUrl": null
        },
        {
          "hex": "#420400",
          "name": "#420400",
          "slug": null,
          "rgb": [
            66,
            4,
            0
          ],
          "hsl": [
            4,
            100,
            13
          ],
          "cmyk": [
            0,
            94,
            100,
            74
          ],
          "luminance": 0.0125,
          "contrast": {
            "black": 1.25,
            "white": 16.8
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": null,
          "apiUrl": null
        }
      ],
      "anchor": "british-racing-green-harmony-split-complementary"
    },
    {
      "key": "monochromatic",
      "label": "Monochromatic",
      "behavior": "same hue, different values",
      "bestUse": "surfaces, states, elevation, restrained UI themes",
      "description": "Monochromatic harmony keeps the source hue and changes lightness. It is the safest system for tonal UI, cards, hover states, shadows, backgrounds, and subtle visual hierarchy.",
      "colors": [
        {
          "hex": "#009E5A",
          "name": "#009E5A",
          "slug": null,
          "rgb": [
            0,
            158,
            90
          ],
          "hsl": [
            154,
            100,
            31
          ],
          "cmyk": [
            100,
            0,
            43,
            38
          ],
          "luminance": 0.2519,
          "contrast": {
            "black": 6.04,
            "white": 3.48
          },
          "wcag": {
            "AA": [
              "#000000",
              "#1A1A1A"
            ],
            "AAA": []
          },
          "url": null,
          "apiUrl": null
        },
        {
          "hex": "#004225",
          "name": "British Racing Green",
          "slug": "british-racing-green",
          "rgb": [
            0,
            66,
            37
          ],
          "hsl": [
            154,
            100,
            13
          ],
          "cmyk": [
            100,
            0,
            44,
            74
          ],
          "luminance": 0.0403,
          "contrast": {
            "black": 1.81,
            "white": 11.63
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": "https://www.colorsencyclopedia.com/colors/british-racing-green/",
          "apiUrl": "https://www.colorsencyclopedia.com/api/colors/british-racing-green.json"
        },
        {
          "hex": "#000000",
          "name": "Black",
          "slug": "black",
          "rgb": [
            0,
            0,
            0
          ],
          "hsl": [
            0,
            0,
            0
          ],
          "cmyk": [
            0,
            0,
            0,
            100
          ],
          "luminance": 0,
          "contrast": {
            "black": 1,
            "white": 21
          },
          "wcag": {
            "AA": [
              "#FFFFFF",
              "#F5F5F5"
            ],
            "AAA": [
              "#FFFFFF",
              "#F5F5F5"
            ]
          },
          "url": "https://www.colorsencyclopedia.com/colors/black/",
          "apiUrl": "https://www.colorsencyclopedia.com/api/colors/black.json"
        }
      ],
      "anchor": "british-racing-green-harmony-monochromatic"
    }
  ],
  "signaturePalette": [
    "#004225",
    "#42001D",
    "#004204",
    "#003E42",
    "#009E5A",
    "#000000"
  ],
  "semanticGroups": [
    "green harmony",
    "cool harmony",
    "dark harmony",
    "jewel tone harmony",
    "british racing green palette system"
  ],
  "useCases": [
    "palette generation",
    "brand color exploration",
    "UI accent planning",
    "CSS design tokens",
    "AI color retrieval"
  ],
  "accessibilityNotes": [
    "Black contrast on British Racing Green: 1.81:1",
    "White contrast on British Racing Green: 11.63:1",
    "AA text options: #FFFFFF, #F5F5F5"
  ],
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/harmonies/british-racing-green.json",
    "https://www.colorsencyclopedia.com/api/colors/british-racing-green.json",
    "https://www.colorsencyclopedia.com/api/hex/004225.json"
  ],
  "url": "https://www.colorsencyclopedia.com/harmonies/british-racing-green/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/harmonies/british-racing-green.json",
  "cssSnippet": ":root {\n  --color-british-racing-green: #004225;\n  --british-racing-green-complementary-1: #42001D;\n  --british-racing-green-analogous-1: #004204;\n  --british-racing-green-analogous-2: #003E42;\n  --british-racing-green-triadic-1: #260042;\n  --british-racing-green-triadic-2: #422600;\n  --british-racing-green-tetradic-1: #040042;\n  --british-racing-green-tetradic-2: #42001D;\n  --british-racing-green-tetradic-3: #3E4200;\n  --british-racing-green-split-complementary-1: #42003E;\n  --british-racing-green-split-complementary-2: #420400;\n  --british-racing-green-monochromatic-1: #009E5A;\n  --british-racing-green-monochromatic-2: #004225;\n  --british-racing-green-monochromatic-3: #000000;\n}\n\n.palette-british-racing-green-harmony {\n  color: #FFFFFF;\n  background: linear-gradient(135deg, #004225, #42001D, #004204, #003E42, #009E5A, #000000);\n}"
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

CSS Harmony Tokens

Use these tokens when British Racing Green needs a complete palette system instead of a single color variable.

:root {
  --color-british-racing-green: #004225;
  --british-racing-green-complementary-1: #42001D;
  --british-racing-green-analogous-1: #004204;
  --british-racing-green-analogous-2: #003E42;
  --british-racing-green-triadic-1: #260042;
  --british-racing-green-triadic-2: #422600;
  --british-racing-green-tetradic-1: #040042;
  --british-racing-green-tetradic-2: #42001D;
  --british-racing-green-tetradic-3: #3E4200;
  --british-racing-green-split-complementary-1: #42003E;
  --british-racing-green-split-complementary-2: #420400;
  --british-racing-green-monochromatic-1: #009E5A;
  --british-racing-green-monochromatic-2: #004225;
  --british-racing-green-monochromatic-3: #000000;
}

.palette-british-racing-green-harmony {
  color: #FFFFFF;
  background: linear-gradient(135deg, #004225, #42001D, #004204, #003E42, #009E5A, #000000);
}

British Racing Green Harmony Groups

Open a group to inspect its generated colors, intended behavior, and best design use. Anchor links above open the matching group directly.

Complementary Harmony1 colors · maximum hue contrast

The complementary set starts from British Racing Green #004225 and produces #42001D. Its maximum hue contrast relationship suits accent colors, strong calls to action, and visual opposition. None of these generated values has an exact named-color match in the current dataset.

Behaviormaximum hue contrast
Best useaccent colors, strong calls to action, visual opposition
Source colorBritish Racing Green · #004225
#42001D#42001D
Analogous Harmony2 colors · neighboring hue movement

The analogous set starts from British Racing Green #004225 and produces #004204 and #003E42. Its neighboring hue movement relationship suits calm palettes, gradients, and natural transitions. None of these generated values has an exact named-color match in the current dataset.

Behaviorneighboring hue movement
Best usecalm palettes, gradients, natural transitions
Source colorBritish Racing Green · #004225
#004204#004204
#003E42#003E42
Triadic Harmony2 colors · three evenly spaced hues

The triadic set starts from British Racing Green #004225 and produces #260042 and #422600. Its three evenly spaced hues relationship suits balanced contrast, playful systems, and broad palette range. None of these generated values has an exact named-color match in the current dataset.

Behaviorthree evenly spaced hues
Best usebalanced contrast, playful systems, broad palette range
Source colorBritish Racing Green · #004225
#260042#260042
#422600#422600
Tetradic Harmony3 colors · two complementary pairs

The tetradic set starts from British Racing Green #004225 and produces #040042, #42001D, and #3E4200. Its two complementary pairs relationship suits large design systems, dashboards, and multi-state UI. None of these generated values has an exact named-color match in the current dataset.

Behaviortwo complementary pairs
Best uselarge design systems, dashboards, multi-state UI
Source colorBritish Racing Green · #004225
#040042#040042
#42001D#42001D
#3E4200#3E4200
Split Complementary Harmony2 colors · softened complementary contrast

The split complementary set starts from British Racing Green #004225 and produces #42003E and #420400. Its softened complementary contrast relationship suits brand palettes, accent pairs, and less aggressive contrast. None of these generated values has an exact named-color match in the current dataset.

Behaviorsoftened complementary contrast
Best usebrand palettes, accent pairs, less aggressive contrast
Source colorBritish Racing Green · #004225
#42003E#42003E
#420400#420400
Monochromatic Harmony3 colors · same hue, different values

The monochromatic set starts from British Racing Green #004225 and produces #009E5A, #004225, and #000000. Its same hue, different values relationship suits surfaces, states, elevation, and restrained UI themes. The generated values match British Racing Green and Black in the named-color dataset.

Behaviorsame hue, different values
Best usesurfaces, states, elevation, restrained UI themes
Source colorBritish Racing Green · #004225
#009E5A#009E5A
British Racing Green#004225
Black#000000

Related Harmony Guides

British Racing Green color referenceOpen the main color page with conversions, CSS, JSON, WCAG, variants, and related colors.British Racing Green harmonies JSONOpen the machine-readable harmony dataset.British Racing Green color APIOpen the complete source color entity JSON.British Racing Green paletteSee the generated palette system based on this color.Green colorsBrowse related named colors in the green family.Cool colorsExplore cool colors across the editorial dataset.Dark colorsExplore dark colors with similar visual behavior.Jewel Tone colorsExplore jewel tone colors with similar visual behavior.