Colors Encyclopedia

Generated palette

Basalt Palette

Basalt Palette: #4B4C4C, #4D4C4C, #4C4D4D, #FFFFFF. Check roles, contrast and CSS variables; open source-color links and JSON.

Basalt Palette assigns primary #4B4C4C, secondary #4D4C4C, surface #4C4D4D, background #FFFFFF, accent #797C7C. The set spans Gray families with neutral temperature. Luminance runs from #4B4C4C at 0.0719 to #FFFFFF at 1; black gives higher contrast on 2 of 5 values.

All palettesSource colorAPI
5colors
Gray palettedominant group
5use cases

Palette Color Roles

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

Primary#4B4C4CBasalt
Secondary#4D4C4C#4D4C4C
Surface#4C4D4D#4C4D4D
Background#FFFFFFWhite
Accent#797C7C#797C7C

CSS Variables

--palette-basalt-primary: #4B4C4C;
--palette-basalt-secondary: #4D4C4C;
--palette-basalt-surface: #4C4D4D;
--palette-basalt-background: #FFFFFF;
--palette-basalt-accent: #797C7C;

Accessibility Snapshot

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

Primary#4B4C4C
Black 2.44:1 · White 8.61:1
Best #FFFFFF
Secondary#4D4C4C
Black 2.45:1 · White 8.56:1
Best #FFFFFF
Surface#4C4D4D
Black 2.48:1 · White 8.48:1
Best #FFFFFF
Background#FFFFFF
Black 21:1 · White 1:1
Best #000000
Accent#797C7C
Black 4.99:1 · White 4.21:1
Best #000000

UI Components Preview

Preview how the Basalt 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 Basalt Palette Data (JSON)

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

AI-Ready Dataset v1.0.0
Luminance0.0719
Black text2.44:1AA Fail
White text8.61:1AA 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": "#4B4C4C",
    "name": "Basalt"
  },
  {
    "role": "secondary",
    "hex": "#4D4C4C",
    "name": "#4D4C4C"
  },
  {
    "role": "surface",
    "hex": "#4C4D4D",
    "name": "#4C4D4D"
  },
  {
    "role": "background",
    "hex": "#FFFFFF",
    "name": "White"
  },
  {
    "role": "accent",
    "hex": "#797C7C",
    "name": "#797C7C"
  }
]
Accessibility
[
  {
    "role": "primary",
    "hex": "#4B4C4C",
    "name": "Basalt",
    "blackContrast": 2.44,
    "whiteContrast": 8.61,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  {
    "role": "secondary",
    "hex": "#4D4C4C",
    "name": "#4D4C4C",
    "blackContrast": 2.45,
    "whiteContrast": 8.56,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  {
    "role": "surface",
    "hex": "#4C4D4D",
    "name": "#4C4D4D",
    "blackContrast": 2.48,
    "whiteContrast": 8.48,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  {
    "role": "background",
    "hex": "#FFFFFF",
    "name": "White",
    "blackContrast": 21,
    "whiteContrast": 1,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  },
  {
    "role": "accent",
    "hex": "#797C7C",
    "name": "#797C7C",
    "blackContrast": 4.99,
    "whiteContrast": 4.21,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000"
    ],
    "aaaTextOptions": []
  }
]
Semantic groups
[
  "basalt palette",
  "generated palette",
  "gray palette",
  "muted palette",
  "light palette",
  "neutral palette"
]
Use cases
[
  "design system tokens",
  "CSS variables",
  "palette reference",
  "AI color ingestion",
  "quiet UI themes"
]
CSS variables
"--palette-basalt-primary: #4B4C4C;\n--palette-basalt-secondary: #4D4C4C;\n--palette-basalt-surface: #4C4D4D;\n--palette-basalt-background: #FFFFFF;\n--palette-basalt-accent: #797C7C;"
Full JSON dataset 
{
  "datasetVersion": "1.0.0",
  "slug": "basalt",
  "name": "Basalt Palette",
  "type": "generated",
  "sourceColor": "basalt",
  "description": "Generated palette built from Basalt, its harmonies, a high-contrast pairing, and a light variant.",
  "narrative": "Basalt Palette combines primary #4B4C4C, secondary #4D4C4C, surface #4C4D4D, background #FFFFFF, accent #797C7C. According to Colors Encyclopedia, the palette works as a gray palette, muted palette, light 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": [
    "basalt palette",
    "generated palette",
    "gray palette",
    "muted palette",
    "light palette",
    "neutral palette"
  ],
  "useCases": [
    "design system tokens",
    "CSS variables",
    "palette reference",
    "AI color ingestion",
    "quiet UI themes"
  ],
  "colors": [
    {
      "role": "primary",
      "hex": "#4B4C4C",
      "slug": "basalt",
      "name": "Basalt",
      "rgb": [
        75,
        76,
        76
      ],
      "hsl": [
        180,
        1,
        30
      ],
      "cmyk": [
        1,
        0,
        0,
        70
      ],
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "muted"
      ],
      "luminance": 0.0719,
      "contrast": {
        "black": 2.44,
        "white": 8.61
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "url": "https://www.colorsencyclopedia.com/colors/basalt/"
    },
    {
      "role": "secondary",
      "hex": "#4D4C4C",
      "slug": null,
      "name": "#4D4C4C",
      "rgb": [
        77,
        76,
        76
      ],
      "hsl": [
        0,
        1,
        30
      ],
      "cmyk": [
        0,
        1,
        1,
        70
      ],
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "muted"
      ],
      "luminance": 0.0727,
      "contrast": {
        "black": 2.45,
        "white": 8.56
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "url": null
    },
    {
      "role": "surface",
      "hex": "#4C4D4D",
      "slug": null,
      "name": "#4C4D4D",
      "rgb": [
        76,
        77,
        77
      ],
      "hsl": [
        180,
        1,
        30
      ],
      "cmyk": [
        1,
        0,
        0,
        70
      ],
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "muted"
      ],
      "luminance": 0.0738,
      "contrast": {
        "black": 2.48,
        "white": 8.48
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "url": null
    },
    {
      "role": "background",
      "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/"
    },
    {
      "role": "accent",
      "hex": "#797C7C",
      "slug": null,
      "name": "#797C7C",
      "rgb": [
        121,
        124,
        124
      ],
      "hsl": [
        180,
        1,
        48
      ],
      "cmyk": [
        2,
        0,
        0,
        51
      ],
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "muted"
      ],
      "luminance": 0.1994,
      "contrast": {
        "black": 4.99,
        "white": 4.21
      },
      "wcag": {
        "AA": [
          "#000000"
        ],
        "AAA": []
      },
      "url": null
    }
  ],
  "roles": [
    {
      "role": "primary",
      "hex": "#4B4C4C",
      "name": "Basalt"
    },
    {
      "role": "secondary",
      "hex": "#4D4C4C",
      "name": "#4D4C4C"
    },
    {
      "role": "surface",
      "hex": "#4C4D4D",
      "name": "#4C4D4D"
    },
    {
      "role": "background",
      "hex": "#FFFFFF",
      "name": "White"
    },
    {
      "role": "accent",
      "hex": "#797C7C",
      "name": "#797C7C"
    }
  ],
  "accessibility": [
    {
      "role": "primary",
      "hex": "#4B4C4C",
      "name": "Basalt",
      "blackContrast": 2.44,
      "whiteContrast": 8.61,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    {
      "role": "secondary",
      "hex": "#4D4C4C",
      "name": "#4D4C4C",
      "blackContrast": 2.45,
      "whiteContrast": 8.56,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    {
      "role": "surface",
      "hex": "#4C4D4D",
      "name": "#4C4D4D",
      "blackContrast": 2.48,
      "whiteContrast": 8.48,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    {
      "role": "background",
      "hex": "#FFFFFF",
      "name": "White",
      "blackContrast": 21,
      "whiteContrast": 1,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ]
    },
    {
      "role": "accent",
      "hex": "#797C7C",
      "name": "#797C7C",
      "blackContrast": 4.99,
      "whiteContrast": 4.21,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000"
      ],
      "aaaTextOptions": []
    }
  ],
  "cssVariables": "--palette-basalt-primary: #4B4C4C;\n--palette-basalt-secondary: #4D4C4C;\n--palette-basalt-surface: #4C4D4D;\n--palette-basalt-background: #FFFFFF;\n--palette-basalt-accent: #797C7C;",
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/palettes/basalt.json",
    "https://www.colorsencyclopedia.com/api/palettes.json",
    "https://www.colorsencyclopedia.com/api/colors/basalt.json"
  ],
  "url": "https://www.colorsencyclopedia.com/palettes/basalt/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/palettes/basalt.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.Basalt Palette JSONOpen the machine-readable palette dataset.Basalt colorOpen the source color reference for this generated palette.Gray colorsExplore gray colors related to this palette.Muted colorsExplore muted colors used in palette systems.Light colorsExplore light colors used in palette systems.Neutral colorsExplore neutral colors used in palette systems.