Colors Encyclopedia

Generated palette

Buttercup Palette

Buttercup Palette: #F3C13A, #396BF3, #F36539, #C8F339. Check roles, contrast and CSS variables; open source-color links and JSON.

Buttercup Palette assigns primary #F3C13A, secondary #396BF3, surface #F36539, background #C8F339, accent #000000. The set spans Orange, Blue, Red, and Green families with warm, cool, and neutral temperatures. Luminance runs from #000000 at 0 to #C8F339 at 0.7668; black gives higher contrast on 3 of 5 values.

All palettesSource colorAPI
5colors
Orange palettedominant group
6use cases

Palette Color Roles

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

Primary#F3C13AButtercup
Secondary#396BF3#396BF3
Surface#F36539#F36539
Background#C8F339#C8F339
Accent#000000Black

CSS Variables

--palette-buttercup-primary: #F3C13A;
--palette-buttercup-secondary: #396BF3;
--palette-buttercup-surface: #F36539;
--palette-buttercup-background: #C8F339;
--palette-buttercup-accent: #000000;

Accessibility Snapshot

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

Primary#F3C13A
Black 12.5:1 · White 1.68:1
Best #000000
Secondary#396BF3
Black 4.57:1 · White 4.59:1
Best #FFFFFF
Surface#F36539
Black 6.73:1 · White 3.12:1
Best #000000
Background#C8F339
Black 16.34:1 · White 1.29:1
Best #000000
Accent#000000
Black 1:1 · White 21:1
Best #FFFFFF

UI Components Preview

Preview how the Buttercup 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 Buttercup Palette Data (JSON)

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

AI-Ready Dataset v1.0.0
Luminance0.575
Black text12.5:1AA Pass
White text1.68:1AA 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": "#F3C13A",
    "name": "Buttercup"
  },
  {
    "role": "secondary",
    "hex": "#396BF3",
    "name": "#396BF3"
  },
  {
    "role": "surface",
    "hex": "#F36539",
    "name": "#F36539"
  },
  {
    "role": "background",
    "hex": "#C8F339",
    "name": "#C8F339"
  },
  {
    "role": "accent",
    "hex": "#000000",
    "name": "Black"
  }
]
Accessibility
[
  {
    "role": "primary",
    "hex": "#F3C13A",
    "name": "Buttercup",
    "blackContrast": 12.5,
    "whiteContrast": 1.68,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A"
    ]
  },
  {
    "role": "secondary",
    "hex": "#396BF3",
    "name": "#396BF3",
    "blackContrast": 4.57,
    "whiteContrast": 4.59,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#000000",
      "#FFFFFF"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "surface",
    "hex": "#F36539",
    "name": "#F36539",
    "blackContrast": 6.73,
    "whiteContrast": 3.12,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "background",
    "hex": "#C8F339",
    "name": "#C8F339",
    "blackContrast": 16.34,
    "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
[
  "buttercup palette",
  "generated palette",
  "orange palette",
  "blue palette",
  "red 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-buttercup-primary: #F3C13A;\n--palette-buttercup-secondary: #396BF3;\n--palette-buttercup-surface: #F36539;\n--palette-buttercup-background: #C8F339;\n--palette-buttercup-accent: #000000;"
Full JSON dataset 
{
  "datasetVersion": "1.0.0",
  "slug": "buttercup",
  "name": "Buttercup Palette",
  "type": "generated",
  "sourceColor": "buttercup",
  "description": "Generated palette built from Buttercup, its harmonies, a high-contrast pairing, and a light variant.",
  "narrative": "Buttercup Palette combines primary #F3C13A, secondary #396BF3, surface #F36539, background #C8F339, accent #000000. According to Colors Encyclopedia, the palette works as a orange palette, blue palette, red 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": [
    "buttercup palette",
    "generated palette",
    "orange palette",
    "blue palette",
    "red 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": "#F3C13A",
      "slug": "buttercup",
      "name": "Buttercup",
      "rgb": [
        243,
        193,
        58
      ],
      "hsl": [
        44,
        89,
        59
      ],
      "cmyk": [
        0,
        21,
        76,
        5
      ],
      "family": "orange",
      "temperature": "warm",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.575,
      "contrast": {
        "black": 12.5,
        "white": 1.68
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ],
        "AAA": [
          "#000000",
          "#1A1A1A"
        ]
      },
      "url": "https://www.colorsencyclopedia.com/colors/buttercup/"
    },
    {
      "role": "secondary",
      "hex": "#396BF3",
      "slug": null,
      "name": "#396BF3",
      "rgb": [
        57,
        107,
        243
      ],
      "hsl": [
        224,
        89,
        59
      ],
      "cmyk": [
        77,
        56,
        0,
        5
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.1786,
      "contrast": {
        "black": 4.57,
        "white": 4.59
      },
      "wcag": {
        "AA": [
          "#000000",
          "#FFFFFF"
        ],
        "AAA": []
      },
      "url": null
    },
    {
      "role": "surface",
      "hex": "#F36539",
      "slug": null,
      "name": "#F36539",
      "rgb": [
        243,
        101,
        57
      ],
      "hsl": [
        14,
        89,
        59
      ],
      "cmyk": [
        0,
        58,
        77,
        5
      ],
      "family": "red",
      "temperature": "warm",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.2866,
      "contrast": {
        "black": 6.73,
        "white": 3.12
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A"
        ],
        "AAA": []
      },
      "url": null
    },
    {
      "role": "background",
      "hex": "#C8F339",
      "slug": null,
      "name": "#C8F339",
      "rgb": [
        200,
        243,
        57
      ],
      "hsl": [
        74,
        89,
        59
      ],
      "cmyk": [
        18,
        0,
        77,
        5
      ],
      "family": "green",
      "temperature": "cool",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.7668,
      "contrast": {
        "black": 16.34,
        "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": "#F3C13A",
      "name": "Buttercup"
    },
    {
      "role": "secondary",
      "hex": "#396BF3",
      "name": "#396BF3"
    },
    {
      "role": "surface",
      "hex": "#F36539",
      "name": "#F36539"
    },
    {
      "role": "background",
      "hex": "#C8F339",
      "name": "#C8F339"
    },
    {
      "role": "accent",
      "hex": "#000000",
      "name": "Black"
    }
  ],
  "accessibility": [
    {
      "role": "primary",
      "hex": "#F3C13A",
      "name": "Buttercup",
      "blackContrast": 12.5,
      "whiteContrast": 1.68,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A"
      ]
    },
    {
      "role": "secondary",
      "hex": "#396BF3",
      "name": "#396BF3",
      "blackContrast": 4.57,
      "whiteContrast": 4.59,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#000000",
        "#FFFFFF"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "surface",
      "hex": "#F36539",
      "name": "#F36539",
      "blackContrast": 6.73,
      "whiteContrast": 3.12,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "background",
      "hex": "#C8F339",
      "name": "#C8F339",
      "blackContrast": 16.34,
      "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-buttercup-primary: #F3C13A;\n--palette-buttercup-secondary: #396BF3;\n--palette-buttercup-surface: #F36539;\n--palette-buttercup-background: #C8F339;\n--palette-buttercup-accent: #000000;",
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/palettes/buttercup.json",
    "https://www.colorsencyclopedia.com/api/palettes.json",
    "https://www.colorsencyclopedia.com/api/colors/buttercup.json"
  ],
  "url": "https://www.colorsencyclopedia.com/palettes/buttercup/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/palettes/buttercup.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.Buttercup Palette JSONOpen the machine-readable palette dataset.Buttercup colorOpen the source color reference for this generated palette.Orange colorsExplore orange colors related to this palette.Blue colorsExplore blue colors related to this palette.Red colorsExplore red 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.