Nearest-color comparison
Cool White #F4F8FF vs Ghost White #F8F8FF: RGB distance 4 and contrast 1.01:1. Compare hue, luminance, saturation, WCAG and practical use.
Cool White and Ghost White are very close, with an RGB distance of 4. Ghost White is lighter by 0.0072, and their saturation is equal. Their mutual contrast is 1.01:1. The pair is too close for a readable foreground/background combination and works better as neighboring palette colors.
The main measurable differences between Cool White and Ghost White across RGB distance, luminance, hue, saturation, and contrast.
blue color
Cool White is #F4F8FF, a cool blue with hue 218°, saturation 100% and luminance 0.9359. Beside Ghost White, it is darker and equally saturated. Of the two standard text choices, black text gives the higher contrast at 19.72:1.
blue color
Ghost White is #F8F8FF, a cool blue with hue 240°, saturation 100% and luminance 0.9431. Beside Cool White, it is lighter and equally saturated. Of the two standard text choices, black text gives the higher contrast at 19.86:1.
Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.
Downloadable color comparison infographic
Save a high-resolution comparison infographic with both HEX colors, visual distance, mutual contrast, and accessibility guidance.
A compact visual strip showing the two compared colors with nearby harmony and variant context.
Machine-readable data
Structured comparison data for Cool White and Ghost White, including color systems, RGB distance, HSL deltas, contrast, accessibility guidance, use cases, and API links.
Colors Encyclopedia
colorsBoth named color records with HEX, RGB, HSL, CMYK, luminance, WCAG, and linksdifferencesRGB distance, HSL deltas, luminance delta, contrast, and shared attributesaccessibilityPair contrast and safer text choices for each coloruseCasesWhen to choose each color and when to use them togetherrelatedApiMachine-readable comparison and color endpoints[
{
"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"
}
]{
"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"
}{
"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
}
]
}{
"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."
}[
"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"
]{
"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"
}