Colors Encyclopedia

Generated palette

Cerulean Palette

Cerulean Palette: #007BA7, #A82D00, #00A881, #0027A8. Check roles, contrast and CSS variables; open source-color links and JSON.

Cerulean Palette assigns primary #007BA7, secondary #A82D00, surface #00A881, background #0027A8, accent #FFFFFF. The set spans Blue, Orange, Cyan, and Gray families with cool, warm, and neutral temperatures. Luminance runs from #0027A8 at 0.0428 to #FFFFFF at 1; black gives higher contrast on 2 of 5 values.

All palettesSource colorAPI
5colors
Blue palettedominant group
5use cases

Palette Color Roles

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

Primary#007BA7Cerulean
Secondary#A82D00#A82D00
Surface#00A881#00A881
Background#0027A8#0027A8
Accent#FFFFFFWhite

CSS Variables

--palette-cerulean-primary: #007BA7;
--palette-cerulean-secondary: #A82D00;
--palette-cerulean-surface: #00A881;
--palette-cerulean-background: #0027A8;
--palette-cerulean-accent: #FFFFFF;

Accessibility Snapshot

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

Primary#007BA7
Black 4.39:1 · White 4.78:1
Best #FFFFFF
Secondary#A82D00
Black 3.04:1 · White 6.91:1
Best #FFFFFF
Surface#00A881
Black 6.92:1 · White 3.04:1
Best #000000
Background#0027A8
Black 1.86:1 · White 11.31:1
Best #FFFFFF
Accent#FFFFFF
Black 21:1 · White 1:1
Best #000000

UI Components Preview

Preview how the Cerulean 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 Cerulean Palette Data (JSON)

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

AI-Ready Dataset v1.0.0
Luminance0.1696
Black text4.39:1AA Fail
White text4.78:1AA Pass
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": "#007BA7",
    "name": "Cerulean"
  },
  {
    "role": "secondary",
    "hex": "#A82D00",
    "name": "#A82D00"
  },
  {
    "role": "surface",
    "hex": "#00A881",
    "name": "#00A881"
  },
  {
    "role": "background",
    "hex": "#0027A8",
    "name": "#0027A8"
  },
  {
    "role": "accent",
    "hex": "#FFFFFF",
    "name": "White"
  }
]
Accessibility
[
  {
    "role": "primary",
    "hex": "#007BA7",
    "name": "Cerulean",
    "blackContrast": 4.39,
    "whiteContrast": 4.78,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "secondary",
    "hex": "#A82D00",
    "name": "#A82D00",
    "blackContrast": 3.04,
    "whiteContrast": 6.91,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "surface",
    "hex": "#00A881",
    "name": "#00A881",
    "blackContrast": 6.92,
    "whiteContrast": 3.04,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "background",
    "hex": "#0027A8",
    "name": "#0027A8",
    "blackContrast": 1.86,
    "whiteContrast": 11.31,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  {
    "role": "accent",
    "hex": "#FFFFFF",
    "name": "White",
    "blackContrast": 21,
    "whiteContrast": 1,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  }
]
Semantic groups
[
  "cerulean palette",
  "generated palette",
  "blue palette",
  "orange palette",
  "cyan palette",
  "gray palette",
  "jewel tone palette",
  "balanced palette",
  "light palette",
  "neutral palette",
  "cool palette",
  "warm palette"
]
Use cases
[
  "design system tokens",
  "CSS variables",
  "palette reference",
  "AI color ingestion",
  "calm digital interfaces"
]
CSS variables
"--palette-cerulean-primary: #007BA7;\n--palette-cerulean-secondary: #A82D00;\n--palette-cerulean-surface: #00A881;\n--palette-cerulean-background: #0027A8;\n--palette-cerulean-accent: #FFFFFF;"
Full JSON dataset 
{
  "datasetVersion": "1.0.0",
  "slug": "cerulean",
  "name": "Cerulean Palette",
  "type": "generated",
  "sourceColor": "cerulean",
  "description": "Generated palette built from Cerulean, its harmonies, a high-contrast pairing, and a light variant.",
  "narrative": "Cerulean Palette combines primary #007BA7, secondary #A82D00, surface #00A881, background #0027A8, accent #FFFFFF. According to Colors Encyclopedia, the palette works as a blue palette, orange palette, cyan 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": [
    "cerulean palette",
    "generated palette",
    "blue palette",
    "orange palette",
    "cyan palette",
    "gray palette",
    "jewel tone palette",
    "balanced palette",
    "light palette",
    "neutral palette",
    "cool palette",
    "warm palette"
  ],
  "useCases": [
    "design system tokens",
    "CSS variables",
    "palette reference",
    "AI color ingestion",
    "calm digital interfaces"
  ],
  "colors": [
    {
      "role": "primary",
      "hex": "#007BA7",
      "slug": "cerulean",
      "name": "Cerulean",
      "rgb": [
        0,
        123,
        167
      ],
      "hsl": [
        196,
        100,
        33
      ],
      "cmyk": [
        100,
        26,
        0,
        35
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "jewel-tone"
      ],
      "luminance": 0.1696,
      "contrast": {
        "black": 4.39,
        "white": 4.78
      },
      "wcag": {
        "AA": [
          "#FFFFFF"
        ],
        "AAA": []
      },
      "url": "https://www.colorsencyclopedia.com/colors/cerulean/"
    },
    {
      "role": "secondary",
      "hex": "#A82D00",
      "slug": null,
      "name": "#A82D00",
      "rgb": [
        168,
        45,
        0
      ],
      "hsl": [
        16,
        100,
        33
      ],
      "cmyk": [
        0,
        73,
        100,
        34
      ],
      "family": "orange",
      "temperature": "warm",
      "tone": [
        "balanced"
      ],
      "luminance": 0.102,
      "contrast": {
        "black": 3.04,
        "white": 6.91
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": []
      },
      "url": null
    },
    {
      "role": "surface",
      "hex": "#00A881",
      "slug": null,
      "name": "#00A881",
      "rgb": [
        0,
        168,
        129
      ],
      "hsl": [
        166,
        100,
        33
      ],
      "cmyk": [
        100,
        0,
        23,
        34
      ],
      "family": "cyan",
      "temperature": "cool",
      "tone": [
        "balanced"
      ],
      "luminance": 0.2959,
      "contrast": {
        "black": 6.92,
        "white": 3.04
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A"
        ],
        "AAA": []
      },
      "url": null
    },
    {
      "role": "background",
      "hex": "#0027A8",
      "slug": null,
      "name": "#0027A8",
      "rgb": [
        0,
        39,
        168
      ],
      "hsl": [
        226,
        100,
        33
      ],
      "cmyk": [
        100,
        77,
        0,
        34
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "jewel-tone"
      ],
      "luminance": 0.0428,
      "contrast": {
        "black": 1.86,
        "white": 11.31
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "url": null
    },
    {
      "role": "accent",
      "hex": "#FFFFFF",
      "slug": "white",
      "name": "White",
      "rgb": [
        255,
        255,
        255
      ],
      "hsl": [
        0,
        0,
        100
      ],
      "cmyk": [
        0,
        0,
        0,
        0
      ],
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "light",
        "neutral"
      ],
      "luminance": 1,
      "contrast": {
        "black": 21,
        "white": 1
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ],
        "AAA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ]
      },
      "url": "https://www.colorsencyclopedia.com/colors/white/"
    }
  ],
  "roles": [
    {
      "role": "primary",
      "hex": "#007BA7",
      "name": "Cerulean"
    },
    {
      "role": "secondary",
      "hex": "#A82D00",
      "name": "#A82D00"
    },
    {
      "role": "surface",
      "hex": "#00A881",
      "name": "#00A881"
    },
    {
      "role": "background",
      "hex": "#0027A8",
      "name": "#0027A8"
    },
    {
      "role": "accent",
      "hex": "#FFFFFF",
      "name": "White"
    }
  ],
  "accessibility": [
    {
      "role": "primary",
      "hex": "#007BA7",
      "name": "Cerulean",
      "blackContrast": 4.39,
      "whiteContrast": 4.78,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "secondary",
      "hex": "#A82D00",
      "name": "#A82D00",
      "blackContrast": 3.04,
      "whiteContrast": 6.91,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "surface",
      "hex": "#00A881",
      "name": "#00A881",
      "blackContrast": 6.92,
      "whiteContrast": 3.04,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "background",
      "hex": "#0027A8",
      "name": "#0027A8",
      "blackContrast": 1.86,
      "whiteContrast": 11.31,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    {
      "role": "accent",
      "hex": "#FFFFFF",
      "name": "White",
      "blackContrast": 21,
      "whiteContrast": 1,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ]
    }
  ],
  "cssVariables": "--palette-cerulean-primary: #007BA7;\n--palette-cerulean-secondary: #A82D00;\n--palette-cerulean-surface: #00A881;\n--palette-cerulean-background: #0027A8;\n--palette-cerulean-accent: #FFFFFF;",
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/palettes/cerulean.json",
    "https://www.colorsencyclopedia.com/api/palettes.json",
    "https://www.colorsencyclopedia.com/api/colors/cerulean.json"
  ],
  "url": "https://www.colorsencyclopedia.com/palettes/cerulean/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/palettes/cerulean.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.Cerulean Palette JSONOpen the machine-readable palette dataset.Cerulean colorOpen the source color reference for this generated palette.Blue colorsExplore blue colors related to this palette.Orange colorsExplore orange colors related to this palette.Cyan colorsExplore cyan colors related to this palette.Gray colorsExplore gray colors related to this palette.Jewel Tone colorsExplore jewel tone colors used in palette systems.Balanced colorsExplore balanced colors used in palette systems.Light colorsExplore light colors used in palette systems.Neutral colorsExplore neutral colors used in palette systems.