Colors Encyclopedia

Generated palette

Neon Yellow Palette

Neon Yellow Palette: #FFF01F, #1F2EFF, #FF801F, #9EFF1F. Check roles, contrast and CSS variables; open source-color links and JSON.

Neon Yellow Palette assigns primary #FFF01F, secondary #1F2EFF, surface #FF801F, background #9EFF1F, accent #000000. The set spans Yellow, Blue, Orange, and Green families with warm, cool, and neutral temperatures. Luminance runs from #000000 at 0 to #FFF01F at 0.8368; black gives higher contrast on 3 of 5 values.

All palettesSource colorAPI
5colors
Yellow palettedominant group
6use cases

Palette Color Roles

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

Primary#FFF01FNeon Yellow
Secondary#1F2EFF#1F2EFF
Surface#FF801F#FF801F
Background#9EFF1F#9EFF1F
Accent#000000Black

CSS Variables

--palette-neon-yellow-primary: #FFF01F;
--palette-neon-yellow-secondary: #1F2EFF;
--palette-neon-yellow-surface: #FF801F;
--palette-neon-yellow-background: #9EFF1F;
--palette-neon-yellow-accent: #000000;

Accessibility Snapshot

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

Primary#FFF01F
Black 17.74:1 · White 1.18:1
Best #000000
Secondary#1F2EFF
Black 2.89:1 · White 7.26:1
Best #FFFFFF
Surface#FF801F
Black 8.36:1 · White 2.51:1
Best #000000
Background#9EFF1F
Black 16.78:1 · White 1.25:1
Best #000000
Accent#000000
Black 1:1 · White 21:1
Best #FFFFFF

UI Components Preview

Preview how the Neon Yellow 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 Neon Yellow Palette Data (JSON)

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

AI-Ready Dataset v1.0.0
Luminance0.8368
Black text17.74:1AA Pass
White text1.18:1AA 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": "#FFF01F",
    "name": "Neon Yellow"
  },
  {
    "role": "secondary",
    "hex": "#1F2EFF",
    "name": "#1F2EFF"
  },
  {
    "role": "surface",
    "hex": "#FF801F",
    "name": "#FF801F"
  },
  {
    "role": "background",
    "hex": "#9EFF1F",
    "name": "#9EFF1F"
  },
  {
    "role": "accent",
    "hex": "#000000",
    "name": "Black"
  }
]
Accessibility
[
  {
    "role": "primary",
    "hex": "#FFF01F",
    "name": "Neon Yellow",
    "blackContrast": 17.74,
    "whiteContrast": 1.18,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  },
  {
    "role": "secondary",
    "hex": "#1F2EFF",
    "name": "#1F2EFF",
    "blackContrast": 2.89,
    "whiteContrast": 7.26,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": [
      "#FFFFFF"
    ]
  },
  {
    "role": "surface",
    "hex": "#FF801F",
    "name": "#FF801F",
    "blackContrast": 8.36,
    "whiteContrast": 2.51,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A"
    ],
    "aaaTextOptions": [
      "#000000"
    ]
  },
  {
    "role": "background",
    "hex": "#9EFF1F",
    "name": "#9EFF1F",
    "blackContrast": 16.78,
    "whiteContrast": 1.25,
    "bestTextColor": "#000000",
    "aaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  },
  {
    "role": "accent",
    "hex": "#000000",
    "name": "Black",
    "blackContrast": 1,
    "whiteContrast": 21,
    "bestTextColor": "#FFFFFF",
    "aaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  }
]
Semantic groups
[
  "neon yellow palette",
  "generated palette",
  "yellow palette",
  "blue palette",
  "orange palette",
  "green palette",
  "gray palette",
  "vibrant palette",
  "dark palette",
  "neutral palette",
  "warm palette",
  "cool palette"
]
Use cases
[
  "design system tokens",
  "CSS variables",
  "palette reference",
  "AI color ingestion",
  "wellness and botanical palettes",
  "calm digital interfaces"
]
CSS variables
"--palette-neon-yellow-primary: #FFF01F;\n--palette-neon-yellow-secondary: #1F2EFF;\n--palette-neon-yellow-surface: #FF801F;\n--palette-neon-yellow-background: #9EFF1F;\n--palette-neon-yellow-accent: #000000;"
Full JSON dataset 
{
  "datasetVersion": "1.0.0",
  "slug": "neon-yellow",
  "name": "Neon Yellow Palette",
  "type": "generated",
  "sourceColor": "neon-yellow",
  "description": "Generated palette built from Neon Yellow, its harmonies, a high-contrast pairing, and a light variant.",
  "narrative": "Neon Yellow Palette combines primary #FFF01F, secondary #1F2EFF, surface #FF801F, background #9EFF1F, accent #000000. According to Colors Encyclopedia, the palette works as a yellow palette, blue palette, orange 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": [
    "neon yellow palette",
    "generated palette",
    "yellow palette",
    "blue palette",
    "orange palette",
    "green palette",
    "gray palette",
    "vibrant palette",
    "dark palette",
    "neutral palette",
    "warm palette",
    "cool palette"
  ],
  "useCases": [
    "design system tokens",
    "CSS variables",
    "palette reference",
    "AI color ingestion",
    "wellness and botanical palettes",
    "calm digital interfaces"
  ],
  "colors": [
    {
      "role": "primary",
      "hex": "#FFF01F",
      "slug": "neon-yellow",
      "name": "Neon Yellow",
      "rgb": [
        255,
        240,
        31
      ],
      "hsl": [
        56,
        100,
        56
      ],
      "cmyk": [
        0,
        6,
        88,
        0
      ],
      "family": "yellow",
      "temperature": "warm",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.8368,
      "contrast": {
        "black": 17.74,
        "white": 1.18
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ],
        "AAA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ]
      },
      "url": "https://www.colorsencyclopedia.com/colors/neon-yellow/"
    },
    {
      "role": "secondary",
      "hex": "#1F2EFF",
      "slug": null,
      "name": "#1F2EFF",
      "rgb": [
        31,
        46,
        255
      ],
      "hsl": [
        236,
        100,
        56
      ],
      "cmyk": [
        88,
        82,
        0,
        0
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.0947,
      "contrast": {
        "black": 2.89,
        "white": 7.26
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF"
        ]
      },
      "url": null
    },
    {
      "role": "surface",
      "hex": "#FF801F",
      "slug": null,
      "name": "#FF801F",
      "rgb": [
        255,
        128,
        31
      ],
      "hsl": [
        26,
        100,
        56
      ],
      "cmyk": [
        0,
        50,
        88,
        0
      ],
      "family": "orange",
      "temperature": "warm",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.368,
      "contrast": {
        "black": 8.36,
        "white": 2.51
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A"
        ],
        "AAA": [
          "#000000"
        ]
      },
      "url": null
    },
    {
      "role": "background",
      "hex": "#9EFF1F",
      "slug": null,
      "name": "#9EFF1F",
      "rgb": [
        158,
        255,
        31
      ],
      "hsl": [
        86,
        100,
        56
      ],
      "cmyk": [
        38,
        0,
        88,
        0
      ],
      "family": "green",
      "temperature": "cool",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.7889,
      "contrast": {
        "black": 16.78,
        "white": 1.25
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ],
        "AAA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ]
      },
      "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": "#FFF01F",
      "name": "Neon Yellow"
    },
    {
      "role": "secondary",
      "hex": "#1F2EFF",
      "name": "#1F2EFF"
    },
    {
      "role": "surface",
      "hex": "#FF801F",
      "name": "#FF801F"
    },
    {
      "role": "background",
      "hex": "#9EFF1F",
      "name": "#9EFF1F"
    },
    {
      "role": "accent",
      "hex": "#000000",
      "name": "Black"
    }
  ],
  "accessibility": [
    {
      "role": "primary",
      "hex": "#FFF01F",
      "name": "Neon Yellow",
      "blackContrast": 17.74,
      "whiteContrast": 1.18,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ]
    },
    {
      "role": "secondary",
      "hex": "#1F2EFF",
      "name": "#1F2EFF",
      "blackContrast": 2.89,
      "whiteContrast": 7.26,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": [
        "#FFFFFF"
      ]
    },
    {
      "role": "surface",
      "hex": "#FF801F",
      "name": "#FF801F",
      "blackContrast": 8.36,
      "whiteContrast": 2.51,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A"
      ],
      "aaaTextOptions": [
        "#000000"
      ]
    },
    {
      "role": "background",
      "hex": "#9EFF1F",
      "name": "#9EFF1F",
      "blackContrast": 16.78,
      "whiteContrast": 1.25,
      "bestTextColor": "#000000",
      "aaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ]
    },
    {
      "role": "accent",
      "hex": "#000000",
      "name": "Black",
      "blackContrast": 1,
      "whiteContrast": 21,
      "bestTextColor": "#FFFFFF",
      "aaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    }
  ],
  "cssVariables": "--palette-neon-yellow-primary: #FFF01F;\n--palette-neon-yellow-secondary: #1F2EFF;\n--palette-neon-yellow-surface: #FF801F;\n--palette-neon-yellow-background: #9EFF1F;\n--palette-neon-yellow-accent: #000000;",
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/palettes/neon-yellow.json",
    "https://www.colorsencyclopedia.com/api/palettes.json",
    "https://www.colorsencyclopedia.com/api/colors/neon-yellow.json"
  ],
  "url": "https://www.colorsencyclopedia.com/palettes/neon-yellow/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/palettes/neon-yellow.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.Neon Yellow Palette JSONOpen the machine-readable palette dataset.Neon Yellow colorOpen the source color reference for this generated palette.Yellow colorsExplore yellow colors related to this palette.Blue colorsExplore blue colors related to this palette.Orange colorsExplore orange colors related to this palette.Green colorsExplore green colors related to this palette.Vibrant colorsExplore vibrant colors used in palette systems.Dark colorsExplore dark colors used in palette systems.Neutral colorsExplore neutral colors used in palette systems.