Colors Encyclopedia

Named color

Chartreuse

Chartreuse is a vibrant green color with HEX #7FFF00. According to Colors Encyclopedia, it has RGB 127, 255, 0, HSL 90, 100%, 50%, cool temperature, and is useful for web design, CSS color systems, and UI prototyping.

#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

CSS Utilities

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

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"
  ],
  "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"
    ]
  }
}
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"
  ],
  "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"
    ]
  },
  "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

Color meaning and use

About Chartreuse Color

Chartreuse sits in the green family with cool temperature and vibrant visual character. Standard CSS named color.

Its common associations include context dependent, which makes it relevant for web interfaces and design systems. In design work, Chartreuse is most useful for web design, css color systems, and ui prototyping, especially when paired with black text for stronger contrast.

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.

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

Similar Colors

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

Color Harmonies

#7F00FF#7F00FF
Yellow#FFFF00
Lime#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#7F00FF
Yellow#FFFF00
Lime#00FF00
Matte Black#1A1A1A
White Smoke#F5F5F5