Colors Encyclopedia

Generated palette

Signal Blue Palette

Signal Blue Palette: #0057B8, #B86200, #00B1B8, #0600B8. Check roles, contrast and CSS variables; open source-color links and JSON.

Signal Blue Palette assigns primary #0057B8, secondary #B86200, surface #00B1B8, background #0600B8, accent #FFFFFF. The set spans Blue, Orange, Cyan, and Gray families with cool, warm, and neutral temperatures. Luminance runs from #0600B8 at 0.035 to #FFFFFF at 1; black gives higher contrast on 3 of 5 values.

All palettesSource colorAPI
5colors
Blue palettedominant group
5use cases

Palette Color Roles

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

Primary#0057B8Signal Blue
Secondary#B86200#B86200
Surface#00B1B8#00B1B8
Background#0600B8#0600B8
Accent#FFFFFFWhite

CSS Variables

--palette-signal-blue-primary: #0057B8;
--palette-signal-blue-secondary: #B86200;
--palette-signal-blue-surface: #00B1B8;
--palette-signal-blue-background: #0600B8;
--palette-signal-blue-accent: #FFFFFF;

Accessibility Snapshot

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

Primary#0057B8
Black 3.06:1 · White 6.87:1
Best #FFFFFF
Secondary#B86200
Black 4.79:1 · White 4.39:1
Best #000000
Surface#00B1B8
Black 7.98:1 · White 2.63:1
Best #000000
Background#0600B8
Black 1.7:1 · White 12.35:1
Best #FFFFFF
Accent#FFFFFF
Black 21:1 · White 1:1
Best #000000

UI Components Preview

Preview how the Signal Blue 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 Signal Blue Palette Data (JSON)

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

AI-Ready Dataset v1.0.0
Luminance0.1028
Black text3.06:1AA Fail
White text6.87:1AA 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": "#0057B8",
    "name": "Signal Blue"
  },
  {
    "role": "secondary",
    "hex": "#B86200",
    "name": "#B86200"
  },
  {
    "role": "surface",
    "hex": "#00B1B8",
    "name": "#00B1B8"
  },
  {
    "role": "background",
    "hex": "#0600B8",
    "name": "#0600B8"
  },
  {
    "role": "accent",
    "hex": "#FFFFFF",
    "name": "White"
  }
]
Accessibility
[
  {
    "role": "primary",
    "hex": "#0057B8",
    "name": "Signal Blue",
    "blackContrast": 3.06,
    "whiteContrast": 6.87,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "secondary",
    "hex": "#B86200",
    "name": "#B86200",
    "blackContrast": 4.79,
    "whiteContrast": 4.39,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000"
    ],
    "aaaTextOptions": []
  },
  {
    "role": "surface",
    "hex": "#00B1B8",
    "name": "#00B1B8",
    "blackContrast": 7.98,
    "whiteContrast": 2.63,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A"
    ],
    "aaaTextOptions": [
      "#000000"
    ]
  },
  {
    "role": "background",
    "hex": "#0600B8",
    "name": "#0600B8",
    "blackContrast": 1.7,
    "whiteContrast": 12.35,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  {
    "role": "accent",
    "hex": "#FFFFFF",
    "name": "White",
    "blackContrast": 21,
    "whiteContrast": 1,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  }
]
Semantic groups
[
  "signal blue palette",
  "generated palette",
  "blue palette",
  "orange palette",
  "cyan palette",
  "gray palette",
  "vibrant palette",
  "jewel tone palette",
  "light palette",
  "neutral palette",
  "cool palette",
  "warm palette"
]
Use cases
[
  "design system tokens",
  "CSS variables",
  "palette reference",
  "AI color ingestion",
  "calm digital interfaces"
]
CSS variables
"--palette-signal-blue-primary: #0057B8;\n--palette-signal-blue-secondary: #B86200;\n--palette-signal-blue-surface: #00B1B8;\n--palette-signal-blue-background: #0600B8;\n--palette-signal-blue-accent: #FFFFFF;"
Full JSON dataset 
{
  "datasetVersion": "1.0.0",
  "slug": "signal-blue",
  "name": "Signal Blue Palette",
  "type": "generated",
  "sourceColor": "signal-blue",
  "description": "Generated palette built from Signal Blue, its harmonies, a high-contrast pairing, and a light variant.",
  "narrative": "Signal Blue Palette combines primary #0057B8, secondary #B86200, surface #00B1B8, background #0600B8, accent #FFFFFF. 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": [
    "signal blue palette",
    "generated palette",
    "blue palette",
    "orange palette",
    "cyan palette",
    "gray palette",
    "vibrant palette",
    "jewel tone palette",
    "light palette",
    "neutral palette",
    "cool palette",
    "warm palette"
  ],
  "useCases": [
    "design system tokens",
    "CSS variables",
    "palette reference",
    "AI color ingestion",
    "calm digital interfaces"
  ],
  "colors": [
    {
      "role": "primary",
      "hex": "#0057B8",
      "slug": "signal-blue",
      "name": "Signal Blue",
      "rgb": [
        0,
        87,
        184
      ],
      "hsl": [
        212,
        100,
        36
      ],
      "cmyk": [
        100,
        53,
        0,
        28
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "vibrant",
        "jewel-tone"
      ],
      "luminance": 0.1028,
      "contrast": {
        "black": 3.06,
        "white": 6.87
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": []
      },
      "url": "https://www.colorsencyclopedia.com/colors/signal-blue/"
    },
    {
      "role": "secondary",
      "hex": "#B86200",
      "slug": null,
      "name": "#B86200",
      "rgb": [
        184,
        98,
        0
      ],
      "hsl": [
        32,
        100,
        36
      ],
      "cmyk": [
        0,
        47,
        100,
        28
      ],
      "family": "orange",
      "temperature": "warm",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.1893,
      "contrast": {
        "black": 4.79,
        "white": 4.39
      },
      "wcag": {
        "AA": [
          "#000000"
        ],
        "AAA": []
      },
      "url": null
    },
    {
      "role": "surface",
      "hex": "#00B1B8",
      "slug": null,
      "name": "#00B1B8",
      "rgb": [
        0,
        177,
        184
      ],
      "hsl": [
        182,
        100,
        36
      ],
      "cmyk": [
        100,
        4,
        0,
        28
      ],
      "family": "cyan",
      "temperature": "cool",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.349,
      "contrast": {
        "black": 7.98,
        "white": 2.63
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A"
        ],
        "AAA": [
          "#000000"
        ]
      },
      "url": null
    },
    {
      "role": "background",
      "hex": "#0600B8",
      "slug": null,
      "name": "#0600B8",
      "rgb": [
        6,
        0,
        184
      ],
      "hsl": [
        242,
        100,
        36
      ],
      "cmyk": [
        97,
        100,
        0,
        28
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "vibrant",
        "jewel-tone"
      ],
      "luminance": 0.035,
      "contrast": {
        "black": 1.7,
        "white": 12.35
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "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": "#0057B8",
      "name": "Signal Blue"
    },
    {
      "role": "secondary",
      "hex": "#B86200",
      "name": "#B86200"
    },
    {
      "role": "surface",
      "hex": "#00B1B8",
      "name": "#00B1B8"
    },
    {
      "role": "background",
      "hex": "#0600B8",
      "name": "#0600B8"
    },
    {
      "role": "accent",
      "hex": "#FFFFFF",
      "name": "White"
    }
  ],
  "accessibility": [
    {
      "role": "primary",
      "hex": "#0057B8",
      "name": "Signal Blue",
      "blackContrast": 3.06,
      "whiteContrast": 6.87,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "secondary",
      "hex": "#B86200",
      "name": "#B86200",
      "blackContrast": 4.79,
      "whiteContrast": 4.39,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000"
      ],
      "aaaTextOptions": []
    },
    {
      "role": "surface",
      "hex": "#00B1B8",
      "name": "#00B1B8",
      "blackContrast": 7.98,
      "whiteContrast": 2.63,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A"
      ],
      "aaaTextOptions": [
        "#000000"
      ]
    },
    {
      "role": "background",
      "hex": "#0600B8",
      "name": "#0600B8",
      "blackContrast": 1.7,
      "whiteContrast": 12.35,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    {
      "role": "accent",
      "hex": "#FFFFFF",
      "name": "White",
      "blackContrast": 21,
      "whiteContrast": 1,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ]
    }
  ],
  "cssVariables": "--palette-signal-blue-primary: #0057B8;\n--palette-signal-blue-secondary: #B86200;\n--palette-signal-blue-surface: #00B1B8;\n--palette-signal-blue-background: #0600B8;\n--palette-signal-blue-accent: #FFFFFF;",
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/palettes/signal-blue.json",
    "https://www.colorsencyclopedia.com/api/palettes.json",
    "https://www.colorsencyclopedia.com/api/colors/signal-blue.json"
  ],
  "url": "https://www.colorsencyclopedia.com/palettes/signal-blue/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/palettes/signal-blue.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.Signal Blue Palette JSONOpen the machine-readable palette dataset.Signal Blue 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.Vibrant colorsExplore vibrant colors used in palette systems.Jewel Tone colorsExplore jewel tone colors used in palette systems.Light colorsExplore light colors used in palette systems.Neutral colorsExplore neutral colors used in palette systems.