Colors Encyclopedia

Generated palette

Nickel Palette

Nickel Palette: #727472, #747274, #737472, #727473. Check roles, contrast and CSS variables; open source-color links and JSON.

Nickel Palette assigns primary #727472, secondary #747274, surface #737472, background #727473, accent #FFFFFF. The set spans Gray families with neutral temperature. Luminance runs from #747274 at 0.1701 to #FFFFFF at 1; black gives higher contrast on 1 of 5 values.

All palettesSource colorAPI
5colors
Gray palettedominant group
5use cases

Palette Color Roles

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

Primary#727472Nickel
Secondary#747274#747274
Surface#737472#737472
Background#727473#727473
Accent#FFFFFFWhite

CSS Variables

--palette-nickel-primary: #727472;
--palette-nickel-secondary: #747274;
--palette-nickel-surface: #737472;
--palette-nickel-background: #727473;
--palette-nickel-accent: #FFFFFF;

Accessibility Snapshot

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

Primary#727472
Black 4.46:1 · White 4.71:1
Best #FFFFFF
Secondary#747274
Black 4.4:1 · White 4.77:1
Best #FFFFFF
Surface#737472
Black 4.47:1 · White 4.7:1
Best #FFFFFF
Background#727473
Black 4.46:1 · White 4.71:1
Best #FFFFFF
Accent#FFFFFF
Black 21:1 · White 1:1
Best #000000

UI Components Preview

Preview how the Nickel 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 Nickel Palette Data (JSON)

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

AI-Ready Dataset v1.0.0
Luminance0.1728
Black text4.46:1AA Fail
White text4.71:1AA 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": "#727472",
    "name": "Nickel"
  },
  {
    "role": "secondary",
    "hex": "#747274",
    "name": "#747274"
  },
  {
    "role": "surface",
    "hex": "#737472",
    "name": "#737472"
  },
  {
    "role": "background",
    "hex": "#727473",
    "name": "#727473"
  },
  {
    "role": "accent",
    "hex": "#FFFFFF",
    "name": "White"
  }
]
Accessibility
[
  {
    "role": "primary",
    "hex": "#727472",
    "name": "Nickel",
    "blackContrast": 4.46,
    "whiteContrast": 4.71,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "secondary",
    "hex": "#747274",
    "name": "#747274",
    "blackContrast": 4.4,
    "whiteContrast": 4.77,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "surface",
    "hex": "#737472",
    "name": "#737472",
    "blackContrast": 4.47,
    "whiteContrast": 4.7,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "background",
    "hex": "#727473",
    "name": "#727473",
    "blackContrast": 4.46,
    "whiteContrast": 4.71,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "accent",
    "hex": "#FFFFFF",
    "name": "White",
    "blackContrast": 21,
    "whiteContrast": 1,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  }
]
Semantic groups
[
  "nickel 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-nickel-primary: #727472;\n--palette-nickel-secondary: #747274;\n--palette-nickel-surface: #737472;\n--palette-nickel-background: #727473;\n--palette-nickel-accent: #FFFFFF;"
Full JSON dataset 
{
  "datasetVersion": "1.0.0",
  "slug": "nickel",
  "name": "Nickel Palette",
  "type": "generated",
  "sourceColor": "nickel",
  "description": "Generated palette built from Nickel, its harmonies, a high-contrast pairing, and a light variant.",
  "narrative": "Nickel Palette combines primary #727472, secondary #747274, surface #737472, background #727473, accent #FFFFFF. 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": [
    "nickel 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": "#727472",
      "slug": "nickel",
      "name": "Nickel",
      "rgb": [
        114,
        116,
        114
      ],
      "hsl": [
        120,
        1,
        45
      ],
      "cmyk": [
        2,
        0,
        2,
        55
      ],
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "muted"
      ],
      "luminance": 0.1728,
      "contrast": {
        "black": 4.46,
        "white": 4.71
      },
      "wcag": {
        "AA": [
          "#FFFFFF"
        ],
        "AAA": []
      },
      "url": "https://www.colorsencyclopedia.com/colors/nickel/"
    },
    {
      "role": "secondary",
      "hex": "#747274",
      "slug": null,
      "name": "#747274",
      "rgb": [
        116,
        114,
        116
      ],
      "hsl": [
        300,
        1,
        45
      ],
      "cmyk": [
        0,
        2,
        0,
        55
      ],
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "muted"
      ],
      "luminance": 0.1701,
      "contrast": {
        "black": 4.4,
        "white": 4.77
      },
      "wcag": {
        "AA": [
          "#FFFFFF"
        ],
        "AAA": []
      },
      "url": null
    },
    {
      "role": "surface",
      "hex": "#737472",
      "slug": null,
      "name": "#737472",
      "rgb": [
        115,
        116,
        114
      ],
      "hsl": [
        90,
        1,
        45
      ],
      "cmyk": [
        1,
        0,
        2,
        55
      ],
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "muted"
      ],
      "luminance": 0.1735,
      "contrast": {
        "black": 4.47,
        "white": 4.7
      },
      "wcag": {
        "AA": [
          "#FFFFFF"
        ],
        "AAA": []
      },
      "url": null
    },
    {
      "role": "background",
      "hex": "#727473",
      "slug": null,
      "name": "#727473",
      "rgb": [
        114,
        116,
        115
      ],
      "hsl": [
        150,
        1,
        45
      ],
      "cmyk": [
        2,
        0,
        1,
        55
      ],
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "muted"
      ],
      "luminance": 0.1731,
      "contrast": {
        "black": 4.46,
        "white": 4.71
      },
      "wcag": {
        "AA": [
          "#FFFFFF"
        ],
        "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": "#727472",
      "name": "Nickel"
    },
    {
      "role": "secondary",
      "hex": "#747274",
      "name": "#747274"
    },
    {
      "role": "surface",
      "hex": "#737472",
      "name": "#737472"
    },
    {
      "role": "background",
      "hex": "#727473",
      "name": "#727473"
    },
    {
      "role": "accent",
      "hex": "#FFFFFF",
      "name": "White"
    }
  ],
  "accessibility": [
    {
      "role": "primary",
      "hex": "#727472",
      "name": "Nickel",
      "blackContrast": 4.46,
      "whiteContrast": 4.71,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "secondary",
      "hex": "#747274",
      "name": "#747274",
      "blackContrast": 4.4,
      "whiteContrast": 4.77,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "surface",
      "hex": "#737472",
      "name": "#737472",
      "blackContrast": 4.47,
      "whiteContrast": 4.7,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "background",
      "hex": "#727473",
      "name": "#727473",
      "blackContrast": 4.46,
      "whiteContrast": 4.71,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "accent",
      "hex": "#FFFFFF",
      "name": "White",
      "blackContrast": 21,
      "whiteContrast": 1,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ]
    }
  ],
  "cssVariables": "--palette-nickel-primary: #727472;\n--palette-nickel-secondary: #747274;\n--palette-nickel-surface: #737472;\n--palette-nickel-background: #727473;\n--palette-nickel-accent: #FFFFFF;",
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/palettes/nickel.json",
    "https://www.colorsencyclopedia.com/api/palettes.json",
    "https://www.colorsencyclopedia.com/api/colors/nickel.json"
  ],
  "url": "https://www.colorsencyclopedia.com/palettes/nickel/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/palettes/nickel.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.Nickel Palette JSONOpen the machine-readable palette dataset.Nickel 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.