Nearest-color comparison

Ink Blue vs Prussian Blue

Ink Blue and Prussian Blue are different blue colors with HEX values #003F5C and #003153. According to Colors Encyclopedia, their RGB distance is 16.6, their contrast ratio is 1.19:1, and the comparison helps choose between tone, temperature, and accessibility behavior.

Ink Blue and Prussian Blue are very close colors. Ink Blue is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.19:1, so the pair is too low for text and better treated as a palette relationship.

Differences Use cases Accessibility JSON

Ink Blue#003F5C

Prussian Blue#003153

Quick Difference Summary

The main measurable differences between Ink Blue and Prussian Blue across RGB distance, luminance, hue, saturation, and contrast.

RGB distance16.6

Pair contrast1.19:1

Luminance delta0.0151

Hue delta6 deg

Lighter colorInk Blue

More saturatedInk Blue

Side-by-Side Color Profiles

blue color

Ink Blue

Ink Blue is #003F5C, a cool blue color with dark and jewel tone character. Compared with Prussian Blue, it is lighter and similar in saturation. Use it for interfaces, brand systems, and technical design, with white text as the safer foreground option.

HEX#003F5C RGB0, 63, 92 HSL199, 100, 18 CMYK100, 32, 0, 64 Luminance0.0433 Best textwhite text

Color page WCAG HEX atlas

blue color

Prussian Blue

Prussian Blue is #003153, a cool blue color with dark and jewel tone character. Compared with Ink Blue, it is darker and similar in saturation. Use it for interfaces, brand systems, and technical design, with white text as the safer foreground option.

HEX#003153 RGB0, 49, 83 HSL205, 100, 16 CMYK100, 41, 0, 67 Luminance0.0282 Best textwhite text

Color page WCAG HEX atlas

When to Use Ink Blue or Prussian Blue

Choose Ink BlueInk Blue is better when the design needs dark and jewel tone blue character, cool temperature, and the specific HEX value #003F5C.

Choose Prussian BluePrussian Blue is better when the design needs dark and jewel tone blue character, cool temperature, and the specific HEX value #003153.

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

Technical Comparison Table

PropertyInk BluePrussian Blue

HEX#003F5C#003153

RGB0, 63, 920, 49, 83

HSL199, 100, 18205, 100, 16

CMYK100, 32, 0, 64100, 41, 0, 67

FamilyBlueBlue

TemperatureCoolCool

ToneDark, Jewel ToneDark, Jewel Tone

Luminance0.04330.0282

Black contrast1.87:11.56:1

White contrast11.25:113.43:1

Shared tonesDark, Jewel Tone

Accessibility and Contrast

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

Ink Bluewhite text - 11.25:1

Prussian Bluewhite text - 13.43:1

Related Palette Strip

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

Ink Blue#003F5C

Prussian Blue#003153

#007DB8#007DB8

#0065AD#0065AD

#5C1D00#5C1D00

#522200#522200

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": "ink-blue",
    "name": "Ink Blue",
    "hex": "#003F5C",
    "rgb": [
      0,
      63,
      92
    ],
    "hsl": [
      199,
      100,
      18
    ],
    "cmyk": [
      100,
      32,
      0,
      64
    ],
    "family": "blue",
    "temperature": "cool",
    "tone": [
      "dark",
      "jewel-tone"
    ],
    "luminance": 0.0433,
    "contrast": {
      "black": 1.87,
      "white": 11.25
    },
    "wcag": {
      "AA": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "AAA": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    "bestText": {
      "text": "#FFFFFF",
      "label": "white text",
      "ratio": 11.25
    },
    "description": "Ink Blue is #003F5C, a cool blue color with dark and jewel tone character. Compared with Prussian Blue, it is lighter and similar in saturation. Use it for interfaces, brand systems, and technical design, with white text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/ink-blue/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/ink-blue.json"
  },
  {
    "slug": "prussian-blue",
    "name": "Prussian Blue",
    "hex": "#003153",
    "rgb": [
      0,
      49,
      83
    ],
    "hsl": [
      205,
      100,
      16
    ],
    "cmyk": [
      100,
      41,
      0,
      67
    ],
    "family": "blue",
    "temperature": "cool",
    "tone": [
      "dark",
      "jewel-tone"
    ],
    "luminance": 0.0282,
    "contrast": {
      "black": 1.56,
      "white": 13.43
    },
    "wcag": {
      "AA": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "AAA": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    "bestText": {
      "text": "#FFFFFF",
      "label": "white text",
      "ratio": 13.43
    },
    "description": "Prussian Blue is #003153, a cool blue color with dark and jewel tone character. Compared with Ink Blue, it is darker and similar in saturation. Use it for interfaces, brand systems, and technical design, with white text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/prussian-blue/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/prussian-blue.json"
  }
]

Differences

{
  "rgbDistance": 16.6,
  "contrastRatio": 1.19,
  "hslDelta": {
    "hue": 6,
    "saturation": 0,
    "lightness": 2
  },
  "luminanceDelta": 0.0151,
  "sameFamily": true,
  "sameTemperature": true,
  "sharedTones": [
    "dark",
    "jewel-tone"
  ],
  "lighterColor": "Ink Blue",
  "moreSaturatedColor": "Ink Blue"
}

Accessibility

{
  "pairContrastRatio": 1.19,
  "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
  "safeText": [
    {
      "color": "Ink Blue",
      "background": "#003F5C",
      "foreground": "#FFFFFF",
      "label": "white text",
      "ratio": 11.25
    },
    {
      "color": "Prussian Blue",
      "background": "#003153",
      "foreground": "#FFFFFF",
      "label": "white text",
      "ratio": 13.43
    }
  ]
}

Use cases

{
  "chooseFirstWhen": "Ink Blue is better when the design needs dark and jewel tone blue character, cool temperature, and the specific HEX value #003F5C.",
  "chooseSecondWhen": "Prussian Blue is better when the design needs dark and jewel tone blue character, cool temperature, and the specific HEX value #003153.",
  "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/ink-blue-vs-prussian-blue.json",
  "https://www.colorsencyclopedia.com/api/colors/ink-blue.json",
  "https://www.colorsencyclopedia.com/api/colors/prussian-blue.json"
]

Full JSON dataset

{
  "datasetVersion": "1.0.0",
  "slug": "ink-blue-vs-prussian-blue",
  "type": "nearest",
  "name": "Ink Blue vs Prussian Blue",
  "verdict": "Ink Blue and Prussian Blue are very close colors. Ink Blue is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.19:1, so the pair is too low for text and better treated as a palette relationship.",
  "summary": "Ink Blue and Prussian Blue are different blue colors with HEX values #003F5C and #003153. According to Colors Encyclopedia, their RGB distance is 16.6, their contrast ratio is 1.19:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
  "rgbDistance": 16.6,
  "contrastRatio": 1.19,
  "colors": [
    {
      "slug": "ink-blue",
      "name": "Ink Blue",
      "hex": "#003F5C",
      "rgb": [
        0,
        63,
        92
      ],
      "hsl": [
        199,
        100,
        18
      ],
      "cmyk": [
        100,
        32,
        0,
        64
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "dark",
        "jewel-tone"
      ],
      "luminance": 0.0433,
      "contrast": {
        "black": 1.87,
        "white": 11.25
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "bestText": {
        "text": "#FFFFFF",
        "label": "white text",
        "ratio": 11.25
      },
      "description": "Ink Blue is #003F5C, a cool blue color with dark and jewel tone character. Compared with Prussian Blue, it is lighter and similar in saturation. Use it for interfaces, brand systems, and technical design, with white text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/ink-blue/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/ink-blue.json"
    },
    {
      "slug": "prussian-blue",
      "name": "Prussian Blue",
      "hex": "#003153",
      "rgb": [
        0,
        49,
        83
      ],
      "hsl": [
        205,
        100,
        16
      ],
      "cmyk": [
        100,
        41,
        0,
        67
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "dark",
        "jewel-tone"
      ],
      "luminance": 0.0282,
      "contrast": {
        "black": 1.56,
        "white": 13.43
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "bestText": {
        "text": "#FFFFFF",
        "label": "white text",
        "ratio": 13.43
      },
      "description": "Prussian Blue is #003153, a cool blue color with dark and jewel tone character. Compared with Ink Blue, it is darker and similar in saturation. Use it for interfaces, brand systems, and technical design, with white text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/prussian-blue/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/prussian-blue.json"
    }
  ],
  "differences": {
    "rgbDistance": 16.6,
    "contrastRatio": 1.19,
    "hslDelta": {
      "hue": 6,
      "saturation": 0,
      "lightness": 2
    },
    "luminanceDelta": 0.0151,
    "sameFamily": true,
    "sameTemperature": true,
    "sharedTones": [
      "dark",
      "jewel-tone"
    ],
    "lighterColor": "Ink Blue",
    "moreSaturatedColor": "Ink Blue"
  },
  "accessibility": {
    "pairContrastRatio": 1.19,
    "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
    "safeText": [
      {
        "color": "Ink Blue",
        "background": "#003F5C",
        "foreground": "#FFFFFF",
        "label": "white text",
        "ratio": 11.25
      },
      {
        "color": "Prussian Blue",
        "background": "#003153",
        "foreground": "#FFFFFF",
        "label": "white text",
        "ratio": 13.43
      }
    ]
  },
  "useCases": {
    "chooseFirstWhen": "Ink Blue is better when the design needs dark and jewel tone blue character, cool temperature, and the specific HEX value #003F5C.",
    "chooseSecondWhen": "Prussian Blue is better when the design needs dark and jewel tone blue character, cool temperature, and the specific HEX value #003153.",
    "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/ink-blue-vs-prussian-blue.json",
    "https://www.colorsencyclopedia.com/api/colors/ink-blue.json",
    "https://www.colorsencyclopedia.com/api/colors/prussian-blue.json"
  ],
  "url": "https://www.colorsencyclopedia.com/compare/ink-blue-vs-prussian-blue/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/compare/ink-blue-vs-prussian-blue.json"
}