Colors Encyclopedia

Generated palette

Sienna Palette

Sienna Palette: #A0522D, #2D7B9F, #9F2D42, #9F8A2D. Check roles, contrast and CSS variables; open source-color links and JSON.

Sienna Palette assigns primary #A0522D, secondary #2D7B9F, surface #9F2D42, background #9F8A2D, accent #FFFFFF. The set spans Orange, Blue, Red, and Yellow families with warm, cool, and neutral temperatures. Luminance runs from #9F2D42 at 0.0964 to #FFFFFF at 1; black gives higher contrast on 2 of 5 values.

All palettesSource colorAPI
5colors
Orange palettedominant group
6use cases

Palette Color Roles

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

Primary#A0522DSienna
Secondary#2D7B9F#2D7B9F
Surface#9F2D42#9F2D42
Background#9F8A2D#9F8A2D
Accent#FFFFFFWhite

CSS Variables

--palette-sienna-primary: #A0522D;
--palette-sienna-secondary: #2D7B9F;
--palette-sienna-surface: #9F2D42;
--palette-sienna-background: #9F8A2D;
--palette-sienna-accent: #FFFFFF;

Accessibility Snapshot

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

Primary#A0522D
Black 3.74:1 · White 5.61:1
Best #FFFFFF
Secondary#2D7B9F
Black 4.45:1 · White 4.72:1
Best #FFFFFF
Surface#9F2D42
Black 2.93:1 · White 7.17:1
Best #FFFFFF
Background#9F8A2D
Black 6.15:1 · White 3.42:1
Best #000000
Accent#FFFFFF
Black 21:1 · White 1:1
Best #000000

UI Components Preview

Preview how the Sienna 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 Sienna Palette Data (JSON)

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

AI-Ready Dataset v1.0.0
Luminance0.137
Black text3.74:1AA Fail
White text5.61:1AA 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": "#A0522D",
    "name": "Sienna"
  },
  {
    "role": "secondary",
    "hex": "#2D7B9F",
    "name": "#2D7B9F"
  },
  {
    "role": "surface",
    "hex": "#9F2D42",
    "name": "#9F2D42"
  },
  {
    "role": "background",
    "hex": "#9F8A2D",
    "name": "#9F8A2D"
  },
  {
    "role": "accent",
    "hex": "#FFFFFF",
    "name": "White"
  }
]
Accessibility
[
  {
    "role": "primary",
    "hex": "#A0522D",
    "name": "Sienna",
    "blackContrast": 3.74,
    "whiteContrast": 5.61,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "secondary",
    "hex": "#2D7B9F",
    "name": "#2D7B9F",
    "blackContrast": 4.45,
    "whiteContrast": 4.72,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "surface",
    "hex": "#9F2D42",
    "name": "#9F2D42",
    "blackContrast": 2.93,
    "whiteContrast": 7.17,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": [
      "#FFFFFF"
    ]
  },
  {
    "role": "background",
    "hex": "#9F8A2D",
    "name": "#9F8A2D",
    "blackContrast": 6.15,
    "whiteContrast": 3.42,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "accent",
    "hex": "#FFFFFF",
    "name": "White",
    "blackContrast": 21,
    "whiteContrast": 1,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  }
]
Semantic groups
[
  "sienna palette",
  "generated palette",
  "orange palette",
  "blue palette",
  "red palette",
  "yellow palette",
  "gray palette",
  "earth tone palette",
  "jewel tone palette",
  "balanced palette",
  "light palette",
  "neutral palette",
  "warm palette",
  "cool palette"
]
Use cases
[
  "design system tokens",
  "CSS variables",
  "palette reference",
  "AI color ingestion",
  "natural branding",
  "calm digital interfaces"
]
CSS variables
"--palette-sienna-primary: #A0522D;\n--palette-sienna-secondary: #2D7B9F;\n--palette-sienna-surface: #9F2D42;\n--palette-sienna-background: #9F8A2D;\n--palette-sienna-accent: #FFFFFF;"
Full JSON dataset 
{
  "datasetVersion": "1.0.0",
  "slug": "sienna",
  "name": "Sienna Palette",
  "type": "generated",
  "sourceColor": "sienna",
  "description": "Generated palette built from Sienna, its harmonies, a high-contrast pairing, and a light variant.",
  "narrative": "Sienna Palette combines primary #A0522D, secondary #2D7B9F, surface #9F2D42, background #9F8A2D, accent #FFFFFF. 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": [
    "sienna palette",
    "generated palette",
    "orange palette",
    "blue palette",
    "red palette",
    "yellow palette",
    "gray palette",
    "earth tone palette",
    "jewel tone palette",
    "balanced palette",
    "light palette",
    "neutral palette",
    "warm palette",
    "cool palette"
  ],
  "useCases": [
    "design system tokens",
    "CSS variables",
    "palette reference",
    "AI color ingestion",
    "natural branding",
    "calm digital interfaces"
  ],
  "colors": [
    {
      "role": "primary",
      "hex": "#A0522D",
      "slug": "sienna",
      "name": "Sienna",
      "rgb": [
        160,
        82,
        45
      ],
      "hsl": [
        19,
        56,
        40
      ],
      "cmyk": [
        0,
        49,
        72,
        37
      ],
      "family": "orange",
      "temperature": "warm",
      "tone": [
        "earth-tone"
      ],
      "luminance": 0.137,
      "contrast": {
        "black": 3.74,
        "white": 5.61
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": []
      },
      "url": "https://www.colorsencyclopedia.com/colors/sienna/"
    },
    {
      "role": "secondary",
      "hex": "#2D7B9F",
      "slug": null,
      "name": "#2D7B9F",
      "rgb": [
        45,
        123,
        159
      ],
      "hsl": [
        199,
        56,
        40
      ],
      "cmyk": [
        72,
        23,
        0,
        38
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "jewel-tone"
      ],
      "luminance": 0.1723,
      "contrast": {
        "black": 4.45,
        "white": 4.72
      },
      "wcag": {
        "AA": [
          "#FFFFFF"
        ],
        "AAA": []
      },
      "url": null
    },
    {
      "role": "surface",
      "hex": "#9F2D42",
      "slug": null,
      "name": "#9F2D42",
      "rgb": [
        159,
        45,
        66
      ],
      "hsl": [
        349,
        56,
        40
      ],
      "cmyk": [
        0,
        72,
        58,
        38
      ],
      "family": "red",
      "temperature": "warm",
      "tone": [
        "balanced"
      ],
      "luminance": 0.0964,
      "contrast": {
        "black": 2.93,
        "white": 7.17
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF"
        ]
      },
      "url": null
    },
    {
      "role": "background",
      "hex": "#9F8A2D",
      "slug": null,
      "name": "#9F8A2D",
      "rgb": [
        159,
        138,
        45
      ],
      "hsl": [
        49,
        56,
        40
      ],
      "cmyk": [
        0,
        13,
        72,
        38
      ],
      "family": "yellow",
      "temperature": "warm",
      "tone": [
        "earth-tone"
      ],
      "luminance": 0.2574,
      "contrast": {
        "black": 6.15,
        "white": 3.42
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A"
        ],
        "AAA": []
      },
      "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": "#A0522D",
      "name": "Sienna"
    },
    {
      "role": "secondary",
      "hex": "#2D7B9F",
      "name": "#2D7B9F"
    },
    {
      "role": "surface",
      "hex": "#9F2D42",
      "name": "#9F2D42"
    },
    {
      "role": "background",
      "hex": "#9F8A2D",
      "name": "#9F8A2D"
    },
    {
      "role": "accent",
      "hex": "#FFFFFF",
      "name": "White"
    }
  ],
  "accessibility": [
    {
      "role": "primary",
      "hex": "#A0522D",
      "name": "Sienna",
      "blackContrast": 3.74,
      "whiteContrast": 5.61,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "secondary",
      "hex": "#2D7B9F",
      "name": "#2D7B9F",
      "blackContrast": 4.45,
      "whiteContrast": 4.72,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "surface",
      "hex": "#9F2D42",
      "name": "#9F2D42",
      "blackContrast": 2.93,
      "whiteContrast": 7.17,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": [
        "#FFFFFF"
      ]
    },
    {
      "role": "background",
      "hex": "#9F8A2D",
      "name": "#9F8A2D",
      "blackContrast": 6.15,
      "whiteContrast": 3.42,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "accent",
      "hex": "#FFFFFF",
      "name": "White",
      "blackContrast": 21,
      "whiteContrast": 1,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ]
    }
  ],
  "cssVariables": "--palette-sienna-primary: #A0522D;\n--palette-sienna-secondary: #2D7B9F;\n--palette-sienna-surface: #9F2D42;\n--palette-sienna-background: #9F8A2D;\n--palette-sienna-accent: #FFFFFF;",
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/palettes/sienna.json",
    "https://www.colorsencyclopedia.com/api/palettes.json",
    "https://www.colorsencyclopedia.com/api/colors/sienna.json"
  ],
  "url": "https://www.colorsencyclopedia.com/palettes/sienna/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/palettes/sienna.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.Sienna Palette JSONOpen the machine-readable palette dataset.Sienna 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.Yellow colorsExplore yellow colors related to this palette.Earth Tone colorsExplore earth tone colors used in palette systems.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.