Colors Encyclopedia

Named color

Chartreuse

Chartreuse color #7FFF00: RGB 127, 255, 0 and HSL 90°, 100%, 50%. Explore its cool green profile, contrast, CSS, palettes and harmonies.

#7FFF00 green cool vibrant
HEX #7FFF00
RGB rgb(127, 255, 0)
HSL hsl(90 100% 50%)
CMYK cmyk(50, 0, 100, 0)
Luminance 0.7603
Contrast Black 16.21:1White 1.3:1

Use this color

Create with Chartreuse

Open a professional color tool with #7FFF00 already applied. Each configuration stays canonical to the tool and can be adjusted or shared.

All color tools
Generate palette & CSS variablesCreate 50–950 tokens and export CSS, SCSS, JSON, or Tailwind.Open configured tool →Open in Gradient StudioStart with Chartreuse and its complementary color.Open configured tool →Mix this colorBlend it with a complementary color and copy color-mix() CSS.Open configured tool →Check contrastOpen the strongest black or white background pairing.Open configured tool →Accessible combinationsReview AA and AAA text options, alternatives, warnings, and UI guidance.Open configured tool →Create glass surfaceUse this color as the tint for a translucent UI panel.Open configured tool →

CSS Utilities

--color-chartreuse: #7FFF00;
.bg-chartreuse { background-color: #7FFF00; }
.text-chartreuse { color: #7FFF00; }
Open CSS utility pageReusable variables, classes, examples, and implementation notes

Color meaning and use

About Chartreuse Color

Chartreuse uses HEX #7FFF00, RGB 127, 255, 0, and HSL 90°, 100%, 50%. The dataset classifies it in the green family with cool temperature and vibrant visual character.

No separate named-color neighbor is recorded for this entry. Its relative luminance is 0.7603; black contrast is 16.21:1 and white contrast is 1.3:1, making black the stronger of those two standard foreground choices.

WCAG Accessibility

Contrast checks for Chartreuse against black and white text.

Black text16.21:1AA Pass
White text1.3:1AA Fail
AA text options#000000, #1A1A1A, #36454F
AAA text options#000000, #1A1A1A, #36454F
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Downloadable color reference infographic

Chartreuse Color Reference Infographic

Save a high-resolution infographic of Chartreuse, including its color values, coordinated palette, and black and white text contrast.

1200 × 800
Chartreuse color reference infographic showing #7FFF00, RGB and HSL values, a coordinated palette, and black and white text contrast.
Chartreuse color reference infographic generated from the verified Colors Encyclopedia dataset.
Download WebPDownload SVGOpen full size

Color Harmonies

#7F00FF#7F00FFYellow#FFFF00Lime#00FF00#007FFF#007FFF#FF0080#FF0080
Open full Chartreuse harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#ADFF5C#ADFF5C#52A300#52A300#80FF00#80FF00#80E31C#80E31C#BFF589#BFF589#94FF29#94FF29

Pairings

Black#000000#7F00FF#7F00FFYellow#FFFF00Lime#00FF00Matte Black#1A1A1AWhite Smoke#F5F5F5

Machine-readable data

Machine-Readable Color Data (JSON)

Perfect for CSS, design systems, automation, and AI ingestion.

AI-Ready Dataset v1.0.0
Luminance0.7603
Black text16.21:1AA Pass
White text1.3:1AA Fail
hexCanonical HEX value
rgbRed, green, blue channels
hslHue, saturation, lightness
cmykApproximate print conversion
wcagAA and AAA contrast options
harmoniesMathematical harmony sets
variantsGenerated tone variants
nearestColorsKnowledge graph neighbors
Download JSON Open API
Structured sections
Color systems
{
  "hex": "#7FFF00",
  "rgb": [
    127,
    255,
    0
  ],
  "hsl": [
    90,
    100,
    50
  ],
  "cmyk": [
    50,
    0,
    100,
    0
  ],
  "luminance": 0.7603,
  "contrast": {
    "black": 16.21,
    "white": 1.3
  }
}
WCAG
{
  "AA": [
    "#000000",
    "#1A1A1A",
    "#36454F"
  ],
  "AAA": [
    "#000000",
    "#1A1A1A",
    "#36454F"
  ]
}
Harmonies
{
  "complementary": "#7F00FF",
  "analogous": [
    "#FFFF00",
    "#00FF00"
  ],
  "triadic": [
    "#007FFF",
    "#FF0080"
  ],
  "tetradic": [
    "#00FFFF",
    "#7F00FF",
    "#FF0000"
  ],
  "splitComplementary": [
    "#0000FF",
    "#FF00FF"
  ],
  "monochromatic": [
    "#ADFF5C",
    "#7FFF00",
    "#52A300"
  ]
}
Variants
{
  "light": "#ADFF5C",
  "dark": "#52A300",
  "saturated": "#80FF00",
  "desaturated": "#80E31C",
  "pastel": "#BFF589",
  "neon": "#94FF29"
}
Pairings
{
  "best": [
    "#000000",
    "#7F00FF",
    "#FFFF00",
    "#00FF00"
  ],
  "avoid": [
    "#80E31C",
    "#ADFF5C"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#000000"
  ],
  "lowContrast": [
    "#ADFF5C",
    "#80E31C"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "lawn-green",
    "toxic-green",
    "green-yellow",
    "neon-green",
    "yellow-green"
  ],
  "generatedPalettes": [
    "chartreuse"
  ],
  "generatedComparisons": [
    "chartreuse-vs-lawn-green",
    "chartreuse-vs-toxic-green"
  ],
  "relatedFamilies": [
    "/colors/by-family/green",
    "/colors/by-temperature/cool",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/chartreuse",
    "/wcag/chartreuse",
    "/css/colors/chartreuse",
    "/hex/7fff00",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/green",
      "/colors/by-temperature/cool",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/chartreuse"
    ],
    "related": [
      "/colors/lawn-green",
      "/colors/toxic-green",
      "/colors/green-yellow",
      "/colors/neon-green",
      "/colors/yellow-green",
      "/compare/chartreuse-vs-lawn-green",
      "/compare/chartreuse-vs-toxic-green",
      "/harmonies/chartreuse",
      "/wcag/chartreuse",
      "/css/colors/chartreuse",
      "/hex/7fff00",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  }
}
Full JSON dataset 
{
  "slug": "chartreuse",
  "name": "Chartreuse",
  "cssName": "chartreuse",
  "hex": "#7FFF00",
  "family": "green",
  "temperature": "cool",
  "tone": [
    "vibrant"
  ],
  "uses": [
    "web design",
    "CSS color systems",
    "UI prototyping"
  ],
  "psychology": {
    "associations": [
      "context dependent"
    ],
    "contexts": [
      "web interfaces",
      "design systems",
      "technical color references"
    ],
    "avoidIn": [
      "claims that require brand or cultural specificity"
    ]
  },
  "aliases": [
    "chartreuse"
  ],
  "sourceType": "standard",
  "confidence": "high",
  "sourceUrl": "https://www.w3.org/TR/css-color-4/#named-colors",
  "origin": {
    "type": "css",
    "notes": "Standard CSS named color."
  },
  "reviewStatus": "auto",
  "editorialNotes": "Generated from CSS named color data and computed color-system properties.",
  "tags": [
    "green",
    "cool",
    "vibrant",
    "web-design",
    "css-color-systems",
    "ui-prototyping",
    "context-dependent"
  ],
  "popularity": 67,
  "rgb": [
    127,
    255,
    0
  ],
  "hsl": [
    90,
    100,
    50
  ],
  "cmyk": [
    50,
    0,
    100,
    0
  ],
  "luminance": 0.7603,
  "contrast": {
    "black": 16.21,
    "white": 1.3
  },
  "harmonies": {
    "complementary": "#7F00FF",
    "analogous": [
      "#FFFF00",
      "#00FF00"
    ],
    "triadic": [
      "#007FFF",
      "#FF0080"
    ],
    "tetradic": [
      "#00FFFF",
      "#7F00FF",
      "#FF0000"
    ],
    "splitComplementary": [
      "#0000FF",
      "#FF00FF"
    ],
    "monochromatic": [
      "#ADFF5C",
      "#7FFF00",
      "#52A300"
    ]
  },
  "variants": {
    "light": "#ADFF5C",
    "dark": "#52A300",
    "saturated": "#80FF00",
    "desaturated": "#80E31C",
    "pastel": "#BFF589",
    "neon": "#94FF29"
  },
  "wcag": {
    "AA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "AAA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  },
  "css": {
    "variable": "--color-chartreuse: #7FFF00;",
    "utility": ".bg-chartreuse { background-color: #7FFF00; }",
    "textUtility": ".text-chartreuse { color: #7FFF00; }"
  },
  "nearestColors": [
    "lawn-green",
    "toxic-green",
    "green-yellow",
    "neon-green",
    "yellow-green"
  ],
  "generatedPalettes": [
    "chartreuse"
  ],
  "generatedComparisons": [
    "chartreuse-vs-lawn-green",
    "chartreuse-vs-toxic-green"
  ],
  "relatedFamilies": [
    "/colors/by-family/green",
    "/colors/by-temperature/cool",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/chartreuse",
    "/wcag/chartreuse",
    "/css/colors/chartreuse",
    "/hex/7fff00",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/green",
      "/colors/by-temperature/cool",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/chartreuse"
    ],
    "related": [
      "/colors/lawn-green",
      "/colors/toxic-green",
      "/colors/green-yellow",
      "/colors/neon-green",
      "/colors/yellow-green",
      "/compare/chartreuse-vs-lawn-green",
      "/compare/chartreuse-vs-toxic-green",
      "/harmonies/chartreuse",
      "/wcag/chartreuse",
      "/css/colors/chartreuse",
      "/hex/7fff00",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  },
  "pairings": {
    "best": [
      "#000000",
      "#7F00FF",
      "#FFFF00",
      "#00FF00"
    ],
    "avoid": [
      "#80E31C",
      "#ADFF5C"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#000000"
    ],
    "lowContrast": [
      "#ADFF5C",
      "#80E31C"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Similar Colors

Lawn Green#7CFC00
Toxic Green#61DE2A
Green Yellow#ADFF2F
Neon Green#39FF14
Yellow Green#9ACD32

Related Color Guides

Green color familyBrowse named green colors and compare nearby swatches.Cool colorsExplore colors with cool temperature behavior.Vibrant colorsFind colors with vibrant visual character.Chartreuse accessibilityCheck contrast and WCAG text options for #7FFF00.Chartreuse CSS utilitiesUse Chartreuse in CSS variables and utility classes.#7FFF00 HEX atlasOpen the permanent HEX atlas record for conversions and variants.Chartreuse paletteOpen the generated palette based on Chartreuse.Chartreuse harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.