Named color

Indigo

Indigo is a jewel tone purple color with HEX #4B0082. According to Colors Encyclopedia, it has RGB 75, 0, 130, HSL 275, 100%, 25%, cool temperature, and is useful for web design, CSS color systems, and UI prototyping.

#4B0082 purple cool jewel-tone

HEX #4B0082

RGB rgb(75, 0, 130)

HSL hsl(275 100% 25%)

CMYK cmyk(42, 100, 0, 49)

Luminance 0.0311

Contrast Black 1.62:1White 12.95:1

CSS Utilities

--color-indigo: #4B0082;
.bg-indigo { background-color: #4B0082; }
.text-indigo { color: #4B0082; }

Open CSS utility pageReusable variables, classes, examples, and implementation notes

Luminance0.0311

Black text1.62:1AA Fail

White text12.95:1AA Pass

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

Structured sections

Color systems

{
  "hex": "#4B0082",
  "rgb": [
    75,
    0,
    130
  ],
  "hsl": [
    275,
    100,
    25
  ],
  "cmyk": [
    42,
    100,
    0,
    49
  ],
  "luminance": 0.0311,
  "contrast": {
    "black": 1.62,
    "white": 12.95
  }
}

WCAG

{
  "AA": [
    "#FFFFFF",
    "#F5F5F5"
  ],
  "AAA": [
    "#FFFFFF",
    "#F5F5F5"
  ]
}

Harmonies

{
  "complementary": "#358000",
  "analogous": [
    "#0B0080",
    "#800075"
  ],
  "triadic": [
    "#804A00",
    "#00804A"
  ],
  "tetradic": [
    "#800B00",
    "#358000",
    "#007580"
  ],
  "splitComplementary": [
    "#758000",
    "#00800B"
  ],
  "monochromatic": [
    "#8000DB",
    "#4B0082",
    "#150024"
  ]
}

Variants

{
  "light": "#8000DB",
  "dark": "#150024",
  "saturated": "#4A0080",
  "desaturated": "#480E71",
  "pastel": "#9213EC",
  "neon": "#6200A8"
}

Pairings

{
  "best": [
    "#FFFFFF",
    "#358000",
    "#0B0080",
    "#800075"
  ],
  "avoid": [
    "#480E71",
    "#8000DB"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#FFFFFF"
  ],
  "lowContrast": [
    "#8000DB",
    "#480E71"
  ]
}

Knowledge graph

{
  "nearestColors": [
    "purple",
    "imperial-purple",
    "midnight-blue",
    "ultramarine",
    "mardi-gras"
  ],
  "generatedPalettes": [
    "indigo"
  ],
  "generatedComparisons": [
    "indigo-vs-imperial-purple",
    "indigo-vs-purple"
  ],
  "relatedFamilies": [
    "/colors/by-family/purple",
    "/colors/by-temperature/cool",
    "/colors/by-tone/jewel-tone"
  ],
  "relatedTools": [
    "/harmonies/indigo",
    "/wcag/indigo",
    "/css/colors/indigo",
    "/hex/4b0082"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/purple",
      "/colors/by-temperature/cool",
      "/colors/by-tone/jewel-tone"
    ],
    "narrower": [
      "/palettes/indigo"
    ],
    "related": [
      "/colors/purple",
      "/colors/imperial-purple",
      "/colors/midnight-blue",
      "/colors/ultramarine",
      "/colors/mardi-gras",
      "/compare/indigo-vs-imperial-purple",
      "/compare/indigo-vs-purple",
      "/harmonies/indigo",
      "/wcag/indigo",
      "/css/colors/indigo",
      "/hex/4b0082"
    ]
  }
}

Full JSON dataset

{
  "slug": "indigo",
  "name": "Indigo",
  "cssName": "indigo",
  "hex": "#4B0082",
  "family": "purple",
  "temperature": "cool",
  "tone": [
    "jewel-tone"
  ],
  "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": [
    "indigo"
  ],
  "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": [
    "purple",
    "cool",
    "jewel-tone",
    "web-design",
    "css-color-systems",
    "ui-prototyping",
    "context-dependent"
  ],
  "popularity": 67,
  "rgb": [
    75,
    0,
    130
  ],
  "hsl": [
    275,
    100,
    25
  ],
  "cmyk": [
    42,
    100,
    0,
    49
  ],
  "luminance": 0.0311,
  "contrast": {
    "black": 1.62,
    "white": 12.95
  },
  "harmonies": {
    "complementary": "#358000",
    "analogous": [
      "#0B0080",
      "#800075"
    ],
    "triadic": [
      "#804A00",
      "#00804A"
    ],
    "tetradic": [
      "#800B00",
      "#358000",
      "#007580"
    ],
    "splitComplementary": [
      "#758000",
      "#00800B"
    ],
    "monochromatic": [
      "#8000DB",
      "#4B0082",
      "#150024"
    ]
  },
  "variants": {
    "light": "#8000DB",
    "dark": "#150024",
    "saturated": "#4A0080",
    "desaturated": "#480E71",
    "pastel": "#9213EC",
    "neon": "#6200A8"
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  "css": {
    "variable": "--color-indigo: #4B0082;",
    "utility": ".bg-indigo { background-color: #4B0082; }",
    "textUtility": ".text-indigo { color: #4B0082; }"
  },
  "nearestColors": [
    "purple",
    "imperial-purple",
    "midnight-blue",
    "ultramarine",
    "mardi-gras"
  ],
  "generatedPalettes": [
    "indigo"
  ],
  "generatedComparisons": [
    "indigo-vs-imperial-purple",
    "indigo-vs-purple"
  ],
  "relatedFamilies": [
    "/colors/by-family/purple",
    "/colors/by-temperature/cool",
    "/colors/by-tone/jewel-tone"
  ],
  "relatedTools": [
    "/harmonies/indigo",
    "/wcag/indigo",
    "/css/colors/indigo",
    "/hex/4b0082"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/purple",
      "/colors/by-temperature/cool",
      "/colors/by-tone/jewel-tone"
    ],
    "narrower": [
      "/palettes/indigo"
    ],
    "related": [
      "/colors/purple",
      "/colors/imperial-purple",
      "/colors/midnight-blue",
      "/colors/ultramarine",
      "/colors/mardi-gras",
      "/compare/indigo-vs-imperial-purple",
      "/compare/indigo-vs-purple",
      "/harmonies/indigo",
      "/wcag/indigo",
      "/css/colors/indigo",
      "/hex/4b0082"
    ]
  },
  "pairings": {
    "best": [
      "#FFFFFF",
      "#358000",
      "#0B0080",
      "#800075"
    ],
    "avoid": [
      "#480E71",
      "#8000DB"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#FFFFFF"
    ],
    "lowContrast": [
      "#8000DB",
      "#480E71"
    ]
  }
}

Color meaning and use

About Indigo Color

Indigo sits in the purple family with cool temperature and jewel tone 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, Indigo is most useful for web design, css color systems, and ui prototyping, especially when paired with white text for stronger contrast.

WCAG Accessibility

Contrast checks for Indigo against black and white text.

Black text1.62:1AA Fail

White text12.95:1AA Pass

AA text options#FFFFFF, #F5F5F5

AAA text options#FFFFFF, #F5F5F5

Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Purple#800080

Imperial Purple#602F6B

Midnight Blue#191970

Ultramarine#120A8F

Mardi Gras#880085

Color Harmonies

#358000#358000

#0B0080#0B0080

#800075#800075

#804A00#804A00

#00804A#00804A

Open full Indigo harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#8000DB#8000DB

#150024#150024

#4A0080#4A0080

#480E71#480E71

#9213EC#9213EC

#6200A8#6200A8

Pairings

White#FFFFFF

#358000#358000

#0B0080#0B0080

#800075#800075

Matte Black#1A1A1A

White Smoke#F5F5F5

Indigo

CSS Utilities

Machine-Readable Color Data (JSON)

About Indigo Color

Related Color Guides

WCAG Accessibility

Similar Colors

Color Harmonies

Variants

Pairings