Nearest-color comparison

Cool White vs Ghost White

Cool White and Ghost White are different blue colors with HEX values #F4F8FF and #F8F8FF. According to Colors Encyclopedia, their RGB distance is 4, their contrast ratio is 1.01:1, and the comparison helps choose between tone, temperature, and accessibility behavior.

Cool White and Ghost White are very close colors. Ghost White is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.01:1, so the pair is too low for text and better treated as a palette relationship.

Differences Use cases Accessibility JSON

Cool White#F4F8FF

Ghost White#F8F8FF

Quick Difference Summary

The main measurable differences between Cool White and Ghost White across RGB distance, luminance, hue, saturation, and contrast.

RGB distance4

Pair contrast1.01:1

Luminance delta0.0072

Hue delta22 deg

Lighter colorGhost White

More saturatedCool White

Side-by-Side Color Profiles

blue color

Cool White

Cool White is #F4F8FF, a cool blue color with light and pastel character. Compared with Ghost White, it is darker and similar in saturation. Use it for neutral systems, backgrounds, and editorial typography, with black text as the safer foreground option.

HEX#F4F8FF RGB244, 248, 255 HSL218, 100, 98 CMYK4, 3, 0, 0 Luminance0.9359 Best textblack text

Color page WCAG HEX atlas

blue color

Ghost White

Ghost White is #F8F8FF, a cool blue color with light and pastel character. Compared with Cool White, it is lighter and similar in saturation. Use it for web design, css color systems, and ui prototyping, with black text as the safer foreground option.

HEX#F8F8FF RGB248, 248, 255 HSL240, 100, 99 CMYK3, 3, 0, 0 Luminance0.9431 Best textblack text

Color page WCAG HEX atlas

When to Use Cool White or Ghost White

Choose Cool WhiteCool White is better when the design needs light and pastel blue character, cool temperature, and the specific HEX value #F4F8FF.

Choose Ghost WhiteGhost White is better when the design needs light and pastel blue character, cool temperature, and the specific HEX value #F8F8FF.

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

Technical Comparison Table

PropertyCool WhiteGhost White

HEX#F4F8FF#F8F8FF

RGB244, 248, 255248, 248, 255

HSL218, 100, 98240, 100, 99

CMYK4, 3, 0, 03, 3, 0, 0

FamilyBlueBlue

TemperatureCoolCool

ToneLight, PastelLight, Pastel

Luminance0.93590.9431

Black contrast19.72:119.86:1

White contrast1.07:11.06:1

Shared tonesLight, Pastel

Accessibility and Contrast

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

Cool Whiteblack text - 19.72:1

Ghost Whiteblack text - 19.86:1

Related Palette Strip

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

Cool White#F4F8FF

Ghost White#F8F8FF

White#FFFFFF

#FFFBF5#FFFBF5

#FFFFFA#FFFFFA

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": "cool-white",
    "name": "Cool White",
    "hex": "#F4F8FF",
    "rgb": [
      244,
      248,
      255
    ],
    "hsl": [
      218,
      100,
      98
    ],
    "cmyk": [
      4,
      3,
      0,
      0
    ],
    "family": "blue",
    "temperature": "cool",
    "tone": [
      "light",
      "pastel"
    ],
    "luminance": 0.9359,
    "contrast": {
      "black": 19.72,
      "white": 1.07
    },
    "wcag": {
      "AA": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "AAA": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ]
    },
    "bestText": {
      "text": "#000000",
      "label": "black text",
      "ratio": 19.72
    },
    "description": "Cool White is #F4F8FF, a cool blue color with light and pastel character. Compared with Ghost White, it is darker and similar in saturation. Use it for neutral systems, backgrounds, and editorial typography, with black text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/cool-white/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/cool-white.json"
  },
  {
    "slug": "ghost-white",
    "name": "Ghost White",
    "hex": "#F8F8FF",
    "rgb": [
      248,
      248,
      255
    ],
    "hsl": [
      240,
      100,
      99
    ],
    "cmyk": [
      3,
      3,
      0,
      0
    ],
    "family": "blue",
    "temperature": "cool",
    "tone": [
      "light",
      "pastel"
    ],
    "luminance": 0.9431,
    "contrast": {
      "black": 19.86,
      "white": 1.06
    },
    "wcag": {
      "AA": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "AAA": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ]
    },
    "bestText": {
      "text": "#000000",
      "label": "black text",
      "ratio": 19.86
    },
    "description": "Ghost White is #F8F8FF, a cool blue color with light and pastel character. Compared with Cool White, it is lighter and similar in saturation. Use it for web design, css color systems, and ui prototyping, with black text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/ghost-white/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/ghost-white.json"
  }
]

Differences

{
  "rgbDistance": 4,
  "contrastRatio": 1.01,
  "hslDelta": {
    "hue": 22,
    "saturation": 0,
    "lightness": 1
  },
  "luminanceDelta": 0.0072,
  "sameFamily": true,
  "sameTemperature": true,
  "sharedTones": [
    "light",
    "pastel"
  ],
  "lighterColor": "Ghost White",
  "moreSaturatedColor": "Cool White"
}

Accessibility

{
  "pairContrastRatio": 1.01,
  "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
  "safeText": [
    {
      "color": "Cool White",
      "background": "#F4F8FF",
      "foreground": "#000000",
      "label": "black text",
      "ratio": 19.72
    },
    {
      "color": "Ghost White",
      "background": "#F8F8FF",
      "foreground": "#000000",
      "label": "black text",
      "ratio": 19.86
    }
  ]
}

Use cases

{
  "chooseFirstWhen": "Cool White is better when the design needs light and pastel blue character, cool temperature, and the specific HEX value #F4F8FF.",
  "chooseSecondWhen": "Ghost White is better when the design needs light and pastel blue character, cool temperature, and the specific HEX value #F8F8FF.",
  "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/cool-white-vs-ghost-white.json",
  "https://www.colorsencyclopedia.com/api/colors/cool-white.json",
  "https://www.colorsencyclopedia.com/api/colors/ghost-white.json"
]

Full JSON dataset

{
  "datasetVersion": "1.0.0",
  "slug": "cool-white-vs-ghost-white",
  "type": "nearest",
  "name": "Cool White vs Ghost White",
  "verdict": "Cool White and Ghost White are very close colors. Ghost White is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.01:1, so the pair is too low for text and better treated as a palette relationship.",
  "summary": "Cool White and Ghost White are different blue colors with HEX values #F4F8FF and #F8F8FF. According to Colors Encyclopedia, their RGB distance is 4, their contrast ratio is 1.01:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
  "rgbDistance": 4,
  "contrastRatio": 1.01,
  "colors": [
    {
      "slug": "cool-white",
      "name": "Cool White",
      "hex": "#F4F8FF",
      "rgb": [
        244,
        248,
        255
      ],
      "hsl": [
        218,
        100,
        98
      ],
      "cmyk": [
        4,
        3,
        0,
        0
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "light",
        "pastel"
      ],
      "luminance": 0.9359,
      "contrast": {
        "black": 19.72,
        "white": 1.07
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ],
        "AAA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ]
      },
      "bestText": {
        "text": "#000000",
        "label": "black text",
        "ratio": 19.72
      },
      "description": "Cool White is #F4F8FF, a cool blue color with light and pastel character. Compared with Ghost White, it is darker and similar in saturation. Use it for neutral systems, backgrounds, and editorial typography, with black text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/cool-white/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/cool-white.json"
    },
    {
      "slug": "ghost-white",
      "name": "Ghost White",
      "hex": "#F8F8FF",
      "rgb": [
        248,
        248,
        255
      ],
      "hsl": [
        240,
        100,
        99
      ],
      "cmyk": [
        3,
        3,
        0,
        0
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "light",
        "pastel"
      ],
      "luminance": 0.9431,
      "contrast": {
        "black": 19.86,
        "white": 1.06
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ],
        "AAA": [
          "#000000",
          "#1A1A1A",
          "#36454F"
        ]
      },
      "bestText": {
        "text": "#000000",
        "label": "black text",
        "ratio": 19.86
      },
      "description": "Ghost White is #F8F8FF, a cool blue color with light and pastel character. Compared with Cool White, it is lighter and similar in saturation. Use it for web design, css color systems, and ui prototyping, with black text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/ghost-white/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/ghost-white.json"
    }
  ],
  "differences": {
    "rgbDistance": 4,
    "contrastRatio": 1.01,
    "hslDelta": {
      "hue": 22,
      "saturation": 0,
      "lightness": 1
    },
    "luminanceDelta": 0.0072,
    "sameFamily": true,
    "sameTemperature": true,
    "sharedTones": [
      "light",
      "pastel"
    ],
    "lighterColor": "Ghost White",
    "moreSaturatedColor": "Cool White"
  },
  "accessibility": {
    "pairContrastRatio": 1.01,
    "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
    "safeText": [
      {
        "color": "Cool White",
        "background": "#F4F8FF",
        "foreground": "#000000",
        "label": "black text",
        "ratio": 19.72
      },
      {
        "color": "Ghost White",
        "background": "#F8F8FF",
        "foreground": "#000000",
        "label": "black text",
        "ratio": 19.86
      }
    ]
  },
  "useCases": {
    "chooseFirstWhen": "Cool White is better when the design needs light and pastel blue character, cool temperature, and the specific HEX value #F4F8FF.",
    "chooseSecondWhen": "Ghost White is better when the design needs light and pastel blue character, cool temperature, and the specific HEX value #F8F8FF.",
    "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/cool-white-vs-ghost-white.json",
    "https://www.colorsencyclopedia.com/api/colors/cool-white.json",
    "https://www.colorsencyclopedia.com/api/colors/ghost-white.json"
  ],
  "url": "https://www.colorsencyclopedia.com/compare/cool-white-vs-ghost-white/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/compare/cool-white-vs-ghost-white.json"
}