Colors Encyclopedia

Generated palette

Yellow Palette

Yellow Palette: #FFFF00, #0000FF, #FF8000, #80FF00. Check roles, contrast and CSS variables; open source-color links and JSON.

Yellow Palette assigns primary #FFFF00, secondary #0000FF, surface #FF8000, background #80FF00, accent #000000. The set spans Yellow, Blue, Orange, and Green families with warm, cool, and neutral temperatures. Luminance runs from #000000 at 0 to #FFFF00 at 0.9278; black gives higher contrast on 3 of 5 values.

All palettesSource colorAPI
5colors
Blue palettedominant group
6use cases

Palette Color Roles

Yellow Palette maps 5 colors to practical UI roles for interfaces, brand systems, and CSS tokens.

Primary#FFFF00Yellow
Secondary#0000FFBlue
Surface#FF8000#FF8000
Background#80FF00#80FF00
Accent#000000Black

CSS Variables

--palette-yellow-primary: #FFFF00;
--palette-yellow-secondary: #0000FF;
--palette-yellow-surface: #FF8000;
--palette-yellow-background: #80FF00;
--palette-yellow-accent: #000000;

Accessibility Snapshot

Compare all 5 Yellow Palette values against black and white text, with the stronger standard foreground identified for each role.

Primary#FFFF00
Black 19.56:1 · White 1.07:1
Best #000000
Secondary#0000FF
Black 2.44:1 · White 8.59:1
Best #FFFFFF
Surface#FF8000
Black 8.34:1 · White 2.52:1
Best #000000
Background#80FF00
Black 16.22:1 · White 1.29:1
Best #000000
Accent#000000
Black 1:1 · White 21:1
Best #FFFFFF

UI Components Preview

Preview how the Yellow Palette roles behave together across common interface components before copying the CSS variables.

ButtonPrimary action with checked foreground contrast.
CardSurface treatment using palette roles.
AlertBackground, text, and accent roles together.
NavbarSecondary role with accent state.

Machine-readable data

Machine-Readable Yellow Palette Data (JSON)

Structured palette data for Yellow Palette, including color roles, accessibility, semantic groups, use cases, CSS variables, and API links.

AI-Ready Dataset v1.0.0
Luminance0.9278
Black text19.56:1AA Pass
White text1.07:1AA Fail
colorsPalette colors with roles and color systems
rolesPrimary, secondary, surface, background, and accent mapping
accessibilityContrast and WCAG text options by palette color
semanticGroupsAI-readable palette labels
useCasesDesign and implementation contexts
cssVariablesCopy-ready CSS custom properties
Download JSON Open API
Structured sections
Roles
[
  {
    "role": "primary",
    "hex": "#FFFF00",
    "name": "Yellow"
  },
  {
    "role": "secondary",
    "hex": "#0000FF",
    "name": "Blue"
  },
  {
    "role": "surface",
    "hex": "#FF8000",
    "name": "#FF8000"
  },
  {
    "role": "background",
    "hex": "#80FF00",
    "name": "#80FF00"
  },
  {
    "role": "accent",
    "hex": "#000000",
    "name": "Black"
  }
]
Accessibility
[
  {
    "role": "primary",
    "hex": "#FFFF00",
    "name": "Yellow",
    "blackContrast": 19.56,
    "whiteContrast": 1.07,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  },
  {
    "role": "secondary",
    "hex": "#0000FF",
    "name": "Blue",
    "blackContrast": 2.44,
    "whiteContrast": 8.59,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  {
    "role": "surface",
    "hex": "#FF8000",
    "name": "#FF8000",
    "blackContrast": 8.34,
    "whiteContrast": 2.52,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A"
    ],
    "aaaTextOptions": [
      "#000000"
    ]
  },
  {
    "role": "background",
    "hex": "#80FF00",
    "name": "#80FF00",
    "blackContrast": 16.22,
    "whiteContrast": 1.29,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  },
  {
    "role": "accent",
    "hex": "#000000",
    "name": "Black",
    "blackContrast": 1,
    "whiteContrast": 21,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  }
]
Semantic groups
[
  "yellow palette",
  "generated palette",
  "blue palette",
  "orange palette",
  "green palette",
  "gray palette",
  "vibrant palette",
  "dark palette",
  "neutral palette",
  "warm palette",
  "cool palette"
]
Use cases
[
  "design system tokens",
  "CSS variables",
  "palette reference",
  "AI color ingestion",
  "wellness and botanical palettes",
  "calm digital interfaces"
]
CSS variables
"--palette-yellow-primary: #FFFF00;\n--palette-yellow-secondary: #0000FF;\n--palette-yellow-surface: #FF8000;\n--palette-yellow-background: #80FF00;\n--palette-yellow-accent: #000000;"
Full JSON dataset 
{
  "datasetVersion": "1.0.0",
  "slug": "yellow",
  "name": "Yellow Palette",
  "type": "generated",
  "sourceColor": "yellow",
  "description": "Generated palette built from Yellow, its harmonies, a high-contrast pairing, and a light variant.",
  "narrative": "Yellow Palette combines primary #FFFF00, secondary #0000FF, surface #FF8000, background #80FF00, accent #000000. According to Colors Encyclopedia, the palette works as a blue palette, orange palette, green palette system for design system tokens, CSS variables, palette reference, and AI color ingestion, with each color mapped to roles, contrast data, CSS tokens, and machine-readable JSON.",
  "semanticGroups": [
    "yellow palette",
    "generated palette",
    "blue palette",
    "orange palette",
    "green palette",
    "gray palette",
    "vibrant palette",
    "dark palette",
    "neutral palette",
    "warm palette",
    "cool palette"
  ],
  "useCases": [
    "design system tokens",
    "CSS variables",
    "palette reference",
    "AI color ingestion",
    "wellness and botanical palettes",
    "calm digital interfaces"
  ],
  "colors": [
    {
      "role": "primary",
      "hex": "#FFFF00",
      "slug": "yellow",
      "name": "Yellow",
      "rgb": [
        255,
        255,
        0
      ],
      "hsl": [
        60,
        100,
        50
      ],
      "cmyk": [
        0,
        0,
        100,
        0
      ],
      "family": "yellow",
      "temperature": "warm",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.9278,
      "contrast": {
        "black": 19.56,
        "white": 1.07
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ],
        "AAA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ]
      },
      "url": "https://www.colorsencyclopedia.com/colors/yellow/"
    },
    {
      "role": "secondary",
      "hex": "#0000FF",
      "slug": "blue",
      "name": "Blue",
      "rgb": [
        0,
        0,
        255
      ],
      "hsl": [
        240,
        100,
        50
      ],
      "cmyk": [
        100,
        100,
        0,
        0
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.0722,
      "contrast": {
        "black": 2.44,
        "white": 8.59
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "url": "https://www.colorsencyclopedia.com/colors/blue/"
    },
    {
      "role": "surface",
      "hex": "#FF8000",
      "slug": null,
      "name": "#FF8000",
      "rgb": [
        255,
        128,
        0
      ],
      "hsl": [
        30,
        100,
        50
      ],
      "cmyk": [
        0,
        50,
        100,
        0
      ],
      "family": "orange",
      "temperature": "warm",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.367,
      "contrast": {
        "black": 8.34,
        "white": 2.52
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A"
        ],
        "AAA": [
          "#000000"
        ]
      },
      "url": null
    },
    {
      "role": "background",
      "hex": "#80FF00",
      "slug": null,
      "name": "#80FF00",
      "rgb": [
        128,
        255,
        0
      ],
      "hsl": [
        90,
        100,
        50
      ],
      "cmyk": [
        50,
        0,
        100,
        0
      ],
      "family": "green",
      "temperature": "cool",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.7611,
      "contrast": {
        "black": 16.22,
        "white": 1.29
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ],
        "AAA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ]
      },
      "url": null
    },
    {
      "role": "accent",
      "hex": "#000000",
      "slug": "black",
      "name": "Black",
      "rgb": [
        0,
        0,
        0
      ],
      "hsl": [
        0,
        0,
        0
      ],
      "cmyk": [
        0,
        0,
        0,
        100
      ],
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "dark",
        "neutral"
      ],
      "luminance": 0,
      "contrast": {
        "black": 1,
        "white": 21
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "url": "https://www.colorsencyclopedia.com/colors/black/"
    }
  ],
  "roles": [
    {
      "role": "primary",
      "hex": "#FFFF00",
      "name": "Yellow"
    },
    {
      "role": "secondary",
      "hex": "#0000FF",
      "name": "Blue"
    },
    {
      "role": "surface",
      "hex": "#FF8000",
      "name": "#FF8000"
    },
    {
      "role": "background",
      "hex": "#80FF00",
      "name": "#80FF00"
    },
    {
      "role": "accent",
      "hex": "#000000",
      "name": "Black"
    }
  ],
  "accessibility": [
    {
      "role": "primary",
      "hex": "#FFFF00",
      "name": "Yellow",
      "blackContrast": 19.56,
      "whiteContrast": 1.07,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ]
    },
    {
      "role": "secondary",
      "hex": "#0000FF",
      "name": "Blue",
      "blackContrast": 2.44,
      "whiteContrast": 8.59,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    {
      "role": "surface",
      "hex": "#FF8000",
      "name": "#FF8000",
      "blackContrast": 8.34,
      "whiteContrast": 2.52,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A"
      ],
      "aaaTextOptions": [
        "#000000"
      ]
    },
    {
      "role": "background",
      "hex": "#80FF00",
      "name": "#80FF00",
      "blackContrast": 16.22,
      "whiteContrast": 1.29,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ]
    },
    {
      "role": "accent",
      "hex": "#000000",
      "name": "Black",
      "blackContrast": 1,
      "whiteContrast": 21,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    }
  ],
  "cssVariables": "--palette-yellow-primary: #FFFF00;\n--palette-yellow-secondary: #0000FF;\n--palette-yellow-surface: #FF8000;\n--palette-yellow-background: #80FF00;\n--palette-yellow-accent: #000000;",
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/palettes/yellow.json",
    "https://www.colorsencyclopedia.com/api/palettes.json",
    "https://www.colorsencyclopedia.com/api/colors/yellow.json"
  ],
  "url": "https://www.colorsencyclopedia.com/palettes/yellow/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/palettes/yellow.json"
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Related Palette Guides

All color palettesBrowse curated and generated palette references.Yellow Palette JSONOpen the machine-readable palette dataset.Yellow colorOpen the source color reference for this generated palette.Yellow colorsExplore yellow colors related to this palette.Blue colorsExplore blue colors related to this palette.Orange colorsExplore orange colors related to this palette.Green colorsExplore green colors related to this palette.Vibrant colorsExplore vibrant colors used in palette systems.Dark colorsExplore dark colors used in palette systems.Neutral colorsExplore neutral colors used in palette systems.