Nearest-color comparison

Indigo vs Imperial Purple

Indigo and Imperial Purple are different purple colors with HEX values #4B0082 and #602F6B. According to Colors Encyclopedia, their RGB distance is 56.4, their contrast ratio is 1.3:1, and the comparison helps choose between tone, temperature, and accessibility behavior.

Indigo and Imperial Purple are visually related colors. Imperial Purple is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.3:1, so the pair is too low for text and better treated as a palette relationship.

Differences Use cases Accessibility JSON

Indigo#4B0082

Imperial Purple#602F6B

Quick Difference Summary

The main measurable differences between Indigo and Imperial Purple across RGB distance, luminance, hue, saturation, and contrast.

RGB distance56.4

Pair contrast1.3:1

Luminance delta0.0247

Hue delta14 deg

Lighter colorImperial Purple

More saturatedIndigo

Side-by-Side Color Profiles

purple color

Indigo

Indigo is #4B0082, a cool purple color with jewel tone character. Compared with Imperial Purple, it is darker and more saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.

HEX#4B0082 RGB75, 0, 130 HSL275, 100, 25 CMYK42, 100, 0, 49 Luminance0.0311 Best textwhite text

Color page WCAG HEX atlas

purple color

Imperial Purple

Imperial Purple is #602F6B, a cool purple color with balanced character. Compared with Indigo, it is lighter and less saturated. Use it for historical references, pigment palettes, and cultural color systems, with white text as the safer foreground option.

HEX#602F6B RGB96, 47, 107 HSL289, 39, 30 CMYK10, 56, 0, 58 Luminance0.0558 Best textwhite text

Color page WCAG HEX atlas

When to Use Indigo or Imperial Purple

Choose IndigoIndigo is better when the design needs jewel tone purple character, cool temperature, and the specific HEX value #4B0082.

Choose Imperial PurpleImperial Purple is better when the design needs balanced purple character, cool temperature, and the specific HEX value #602F6B.

Use togetherUse these colors together as related palette neighbors, subtle material differences, or tonal alternatives rather than readable foreground/background pairs.

Technical Comparison Table

PropertyIndigoImperial Purple

HEX#4B0082#602F6B

RGB75, 0, 13096, 47, 107

HSL275, 100, 25289, 39, 30

CMYK42, 100, 0, 4910, 56, 0, 58

FamilyPurplePurple

TemperatureCoolCool

ToneJewel ToneBalanced

Luminance0.03110.0558

Black contrast1.62:12.12:1

White contrast12.95:19.92:1

Shared tonesNone

Accessibility and Contrast

Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.

Indigowhite text - 12.95:1

Imperial Purplewhite text - 9.92:1

Related Palette Strip

A compact visual strip showing the two compared colors with nearby harmony and variant context.

Indigo#4B0082

Imperial Purple#602F6B

#8000DB#8000DB

#994BAA#994BAA

#358000#358000

#3A6A2F#3A6A2F

colorsBoth named color records with HEX, RGB, HSL, CMYK, luminance, WCAG, and links

differencesRGB distance, HSL deltas, luminance delta, contrast, and shared attributes

accessibilityPair contrast and safer text choices for each color

useCasesWhen to choose each color and when to use them together

relatedApiMachine-readable comparison and color endpoints

Structured sections

Colors

[
  {
    "slug": "indigo",
    "name": "Indigo",
    "hex": "#4B0082",
    "rgb": [
      75,
      0,
      130
    ],
    "hsl": [
      275,
      100,
      25
    ],
    "cmyk": [
      42,
      100,
      0,
      49
    ],
    "family": "purple",
    "temperature": "cool",
    "tone": [
      "jewel-tone"
    ],
    "luminance": 0.0311,
    "contrast": {
      "black": 1.62,
      "white": 12.95
    },
    "wcag": {
      "AA": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "AAA": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    "bestText": {
      "text": "#FFFFFF",
      "label": "white text",
      "ratio": 12.95
    },
    "description": "Indigo is #4B0082, a cool purple color with jewel tone character. Compared with Imperial Purple, it is darker and more saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/indigo/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/indigo.json"
  },
  {
    "slug": "imperial-purple",
    "name": "Imperial Purple",
    "hex": "#602F6B",
    "rgb": [
      96,
      47,
      107
    ],
    "hsl": [
      289,
      39,
      30
    ],
    "cmyk": [
      10,
      56,
      0,
      58
    ],
    "family": "purple",
    "temperature": "cool",
    "tone": [
      "balanced"
    ],
    "luminance": 0.0558,
    "contrast": {
      "black": 2.12,
      "white": 9.92
    },
    "wcag": {
      "AA": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "AAA": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    "bestText": {
      "text": "#FFFFFF",
      "label": "white text",
      "ratio": 9.92
    },
    "description": "Imperial Purple is #602F6B, a cool purple color with balanced character. Compared with Indigo, it is lighter and less saturated. Use it for historical references, pigment palettes, and cultural color systems, with white text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/imperial-purple/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/imperial-purple.json"
  }
]

Differences

{
  "rgbDistance": 56.4,
  "contrastRatio": 1.3,
  "hslDelta": {
    "hue": 14,
    "saturation": 61,
    "lightness": 5
  },
  "luminanceDelta": 0.0247,
  "sameFamily": true,
  "sameTemperature": true,
  "sharedTones": [],
  "lighterColor": "Imperial Purple",
  "moreSaturatedColor": "Indigo"
}

Accessibility

{
  "pairContrastRatio": 1.3,
  "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
  "safeText": [
    {
      "color": "Indigo",
      "background": "#4B0082",
      "foreground": "#FFFFFF",
      "label": "white text",
      "ratio": 12.95
    },
    {
      "color": "Imperial Purple",
      "background": "#602F6B",
      "foreground": "#FFFFFF",
      "label": "white text",
      "ratio": 9.92
    }
  ]
}

Use cases

{
  "chooseFirstWhen": "Indigo is better when the design needs jewel tone purple character, cool temperature, and the specific HEX value #4B0082.",
  "chooseSecondWhen": "Imperial Purple is better when the design needs balanced purple character, cool temperature, and the specific HEX value #602F6B.",
  "useTogetherWhen": "Use these colors together as related palette neighbors, subtle material differences, or tonal alternatives rather than readable foreground/background pairs."
}

Related API

[
  "https://www.colorsencyclopedia.com/api/compare/indigo-vs-imperial-purple.json",
  "https://www.colorsencyclopedia.com/api/colors/indigo.json",
  "https://www.colorsencyclopedia.com/api/colors/imperial-purple.json"
]

Full JSON dataset

{
  "datasetVersion": "1.0.0",
  "slug": "indigo-vs-imperial-purple",
  "type": "nearest",
  "name": "Indigo vs Imperial Purple",
  "verdict": "Indigo and Imperial Purple are visually related colors. Imperial Purple is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.3:1, so the pair is too low for text and better treated as a palette relationship.",
  "summary": "Indigo and Imperial Purple are different purple colors with HEX values #4B0082 and #602F6B. According to Colors Encyclopedia, their RGB distance is 56.4, their contrast ratio is 1.3:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
  "rgbDistance": 56.4,
  "contrastRatio": 1.3,
  "colors": [
    {
      "slug": "indigo",
      "name": "Indigo",
      "hex": "#4B0082",
      "rgb": [
        75,
        0,
        130
      ],
      "hsl": [
        275,
        100,
        25
      ],
      "cmyk": [
        42,
        100,
        0,
        49
      ],
      "family": "purple",
      "temperature": "cool",
      "tone": [
        "jewel-tone"
      ],
      "luminance": 0.0311,
      "contrast": {
        "black": 1.62,
        "white": 12.95
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "bestText": {
        "text": "#FFFFFF",
        "label": "white text",
        "ratio": 12.95
      },
      "description": "Indigo is #4B0082, a cool purple color with jewel tone character. Compared with Imperial Purple, it is darker and more saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/indigo/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/indigo.json"
    },
    {
      "slug": "imperial-purple",
      "name": "Imperial Purple",
      "hex": "#602F6B",
      "rgb": [
        96,
        47,
        107
      ],
      "hsl": [
        289,
        39,
        30
      ],
      "cmyk": [
        10,
        56,
        0,
        58
      ],
      "family": "purple",
      "temperature": "cool",
      "tone": [
        "balanced"
      ],
      "luminance": 0.0558,
      "contrast": {
        "black": 2.12,
        "white": 9.92
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "bestText": {
        "text": "#FFFFFF",
        "label": "white text",
        "ratio": 9.92
      },
      "description": "Imperial Purple is #602F6B, a cool purple color with balanced character. Compared with Indigo, it is lighter and less saturated. Use it for historical references, pigment palettes, and cultural color systems, with white text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/imperial-purple/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/imperial-purple.json"
    }
  ],
  "differences": {
    "rgbDistance": 56.4,
    "contrastRatio": 1.3,
    "hslDelta": {
      "hue": 14,
      "saturation": 61,
      "lightness": 5
    },
    "luminanceDelta": 0.0247,
    "sameFamily": true,
    "sameTemperature": true,
    "sharedTones": [],
    "lighterColor": "Imperial Purple",
    "moreSaturatedColor": "Indigo"
  },
  "accessibility": {
    "pairContrastRatio": 1.3,
    "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
    "safeText": [
      {
        "color": "Indigo",
        "background": "#4B0082",
        "foreground": "#FFFFFF",
        "label": "white text",
        "ratio": 12.95
      },
      {
        "color": "Imperial Purple",
        "background": "#602F6B",
        "foreground": "#FFFFFF",
        "label": "white text",
        "ratio": 9.92
      }
    ]
  },
  "useCases": {
    "chooseFirstWhen": "Indigo is better when the design needs jewel tone purple character, cool temperature, and the specific HEX value #4B0082.",
    "chooseSecondWhen": "Imperial Purple is better when the design needs balanced purple character, cool temperature, and the specific HEX value #602F6B.",
    "useTogetherWhen": "Use these colors together as related palette neighbors, subtle material differences, or tonal alternatives rather than readable foreground/background pairs."
  },
  "relatedApi": [
    "https://www.colorsencyclopedia.com/api/compare/indigo-vs-imperial-purple.json",
    "https://www.colorsencyclopedia.com/api/colors/indigo.json",
    "https://www.colorsencyclopedia.com/api/colors/imperial-purple.json"
  ],
  "url": "https://www.colorsencyclopedia.com/compare/indigo-vs-imperial-purple/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/compare/indigo-vs-imperial-purple.json"
}