Colors Encyclopedia

Generated palette

Slate Gray Palette

Slate Gray Palette: #708090, #90806F, #6F9090, #6F6F90. Check roles, contrast and CSS variables; open source-color links and JSON.

Slate Gray Palette assigns primary #708090, secondary #90806F, surface #6F9090, background #6F6F90, accent #000000. The set spans Blue, Orange, Cyan, and Gray families with cool, warm, and neutral temperatures. Luminance runs from #000000 at 0 to #6F9090 at 0.2534; black gives higher contrast on 3 of 5 values.

All palettesSource colorAPI
5colors
Blue palettedominant group
7use cases

Palette Color Roles

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

Primary#708090Slate Grey
Secondary#90806F#90806F
Surface#6F9090#6F9090
Background#6F6F90#6F6F90
Accent#000000Black

CSS Variables

--palette-slate-gray-primary: #708090;
--palette-slate-gray-secondary: #90806F;
--palette-slate-gray-surface: #6F9090;
--palette-slate-gray-background: #6F6F90;
--palette-slate-gray-accent: #000000;

Accessibility Snapshot

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

Primary#708090
Black 5.18:1 · White 4.05:1
Best #000000
Secondary#90806F
Black 5.5:1 · White 3.82:1
Best #000000
Surface#6F9090
Black 6.07:1 · White 3.46:1
Best #000000
Background#6F6F90
Black 4.35:1 · White 4.83:1
Best #FFFFFF
Accent#000000
Black 1:1 · White 21:1
Best #FFFFFF

UI Components Preview

Preview how the Slate Gray 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 Slate Gray Palette Data (JSON)

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

AI-Ready Dataset v1.0.0
Luminance0.209
Black text5.18:1AA Pass
White text4.05:1AA 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": "#708090",
    "name": "Slate Grey"
  },
  {
    "role": "secondary",
    "hex": "#90806F",
    "name": "#90806F"
  },
  {
    "role": "surface",
    "hex": "#6F9090",
    "name": "#6F9090"
  },
  {
    "role": "background",
    "hex": "#6F6F90",
    "name": "#6F6F90"
  },
  {
    "role": "accent",
    "hex": "#000000",
    "name": "Black"
  }
]
Accessibility
[
  {
    "role": "primary",
    "hex": "#708090",
    "name": "Slate Grey",
    "blackContrast": 5.18,
    "whiteContrast": 4.05,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "secondary",
    "hex": "#90806F",
    "name": "#90806F",
    "blackContrast": 5.5,
    "whiteContrast": 3.82,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "surface",
    "hex": "#6F9090",
    "name": "#6F9090",
    "blackContrast": 6.07,
    "whiteContrast": 3.46,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "background",
    "hex": "#6F6F90",
    "name": "#6F6F90",
    "blackContrast": 4.35,
    "whiteContrast": 4.83,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "accent",
    "hex": "#000000",
    "name": "Black",
    "blackContrast": 1,
    "whiteContrast": 21,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  }
]
Semantic groups
[
  "slate gray palette",
  "generated palette",
  "blue palette",
  "orange palette",
  "cyan palette",
  "gray palette",
  "muted palette",
  "earth tone palette",
  "dark palette",
  "neutral palette",
  "cool palette",
  "warm palette"
]
Use cases
[
  "design system tokens",
  "CSS variables",
  "palette reference",
  "AI color ingestion",
  "quiet UI themes",
  "natural branding",
  "calm digital interfaces"
]
CSS variables
"--palette-slate-gray-primary: #708090;\n--palette-slate-gray-secondary: #90806F;\n--palette-slate-gray-surface: #6F9090;\n--palette-slate-gray-background: #6F6F90;\n--palette-slate-gray-accent: #000000;"
Full JSON dataset 
{
  "datasetVersion": "1.0.0",
  "slug": "slate-gray",
  "name": "Slate Gray Palette",
  "type": "generated",
  "sourceColor": "slate-gray",
  "description": "Generated palette built from Slate Gray, its harmonies, a high-contrast pairing, and a light variant.",
  "narrative": "Slate Gray Palette combines primary #708090, secondary #90806F, surface #6F9090, background #6F6F90, accent #000000. 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": [
    "slate gray palette",
    "generated palette",
    "blue palette",
    "orange palette",
    "cyan palette",
    "gray palette",
    "muted palette",
    "earth tone palette",
    "dark palette",
    "neutral palette",
    "cool palette",
    "warm palette"
  ],
  "useCases": [
    "design system tokens",
    "CSS variables",
    "palette reference",
    "AI color ingestion",
    "quiet UI themes",
    "natural branding",
    "calm digital interfaces"
  ],
  "colors": [
    {
      "role": "primary",
      "hex": "#708090",
      "slug": "slate-grey",
      "name": "Slate Grey",
      "rgb": [
        112,
        128,
        144
      ],
      "hsl": [
        210,
        13,
        50
      ],
      "cmyk": [
        22,
        11,
        0,
        44
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "muted"
      ],
      "luminance": 0.209,
      "contrast": {
        "black": 5.18,
        "white": 4.05
      },
      "wcag": {
        "AA": [
          "#000000"
        ],
        "AAA": []
      },
      "url": "https://www.colorsencyclopedia.com/colors/slate-grey/"
    },
    {
      "role": "secondary",
      "hex": "#90806F",
      "slug": null,
      "name": "#90806F",
      "rgb": [
        144,
        128,
        111
      ],
      "hsl": [
        31,
        13,
        50
      ],
      "cmyk": [
        0,
        11,
        23,
        44
      ],
      "family": "orange",
      "temperature": "warm",
      "tone": [
        "muted",
        "earth-tone"
      ],
      "luminance": 0.2252,
      "contrast": {
        "black": 5.5,
        "white": 3.82
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A"
        ],
        "AAA": []
      },
      "url": null
    },
    {
      "role": "surface",
      "hex": "#6F9090",
      "slug": null,
      "name": "#6F9090",
      "rgb": [
        111,
        144,
        144
      ],
      "hsl": [
        180,
        13,
        50
      ],
      "cmyk": [
        23,
        0,
        0,
        44
      ],
      "family": "cyan",
      "temperature": "cool",
      "tone": [
        "muted"
      ],
      "luminance": 0.2534,
      "contrast": {
        "black": 6.07,
        "white": 3.46
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A"
        ],
        "AAA": []
      },
      "url": null
    },
    {
      "role": "background",
      "hex": "#6F6F90",
      "slug": null,
      "name": "#6F6F90",
      "rgb": [
        111,
        111,
        144
      ],
      "hsl": [
        240,
        13,
        50
      ],
      "cmyk": [
        23,
        23,
        0,
        44
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "muted"
      ],
      "luminance": 0.1676,
      "contrast": {
        "black": 4.35,
        "white": 4.83
      },
      "wcag": {
        "AA": [
          "#FFFFFF"
        ],
        "AAA": []
      },
      "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": "#708090",
      "name": "Slate Grey"
    },
    {
      "role": "secondary",
      "hex": "#90806F",
      "name": "#90806F"
    },
    {
      "role": "surface",
      "hex": "#6F9090",
      "name": "#6F9090"
    },
    {
      "role": "background",
      "hex": "#6F6F90",
      "name": "#6F6F90"
    },
    {
      "role": "accent",
      "hex": "#000000",
      "name": "Black"
    }
  ],
  "accessibility": [
    {
      "role": "primary",
      "hex": "#708090",
      "name": "Slate Grey",
      "blackContrast": 5.18,
      "whiteContrast": 4.05,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "secondary",
      "hex": "#90806F",
      "name": "#90806F",
      "blackContrast": 5.5,
      "whiteContrast": 3.82,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "surface",
      "hex": "#6F9090",
      "name": "#6F9090",
      "blackContrast": 6.07,
      "whiteContrast": 3.46,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "background",
      "hex": "#6F6F90",
      "name": "#6F6F90",
      "blackContrast": 4.35,
      "whiteContrast": 4.83,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "accent",
      "hex": "#000000",
      "name": "Black",
      "blackContrast": 1,
      "whiteContrast": 21,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    }
  ],
  "cssVariables": "--palette-slate-gray-primary: #708090;\n--palette-slate-gray-secondary: #90806F;\n--palette-slate-gray-surface: #6F9090;\n--palette-slate-gray-background: #6F6F90;\n--palette-slate-gray-accent: #000000;",
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/palettes/slate-gray.json",
    "https://www.colorsencyclopedia.com/api/palettes.json",
    "https://www.colorsencyclopedia.com/api/colors/slate-gray.json"
  ],
  "url": "https://www.colorsencyclopedia.com/palettes/slate-gray/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/palettes/slate-gray.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.Slate Gray Palette JSONOpen the machine-readable palette dataset.Slate Gray 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.Muted colorsExplore muted colors used in palette systems.Earth Tone colorsExplore earth tone colors used in palette systems.Dark colorsExplore dark colors used in palette systems.Neutral colorsExplore neutral colors used in palette systems.