Colors Encyclopedia

Named color

Cool White

Cool White color #F4F8FF: RGB 244, 248, 255 and HSL 218°, 100%, 98%. Explore its cool blue profile, contrast, CSS, palettes and harmonies.

#F4F8FF blue cool lightpastel
HEX #F4F8FF
RGB rgb(244, 248, 255)
HSL hsl(218 100% 98%)
CMYK cmyk(4, 3, 0, 0)
Luminance 0.9359
Contrast Black 19.72:1White 1.07:1

Use this color

Create with Cool White

Open a professional color tool with #F4F8FF already applied. Each configuration stays canonical to the tool and can be adjusted or shared.

All color tools
Generate palette & CSS variablesCreate 50–950 tokens and export CSS, SCSS, JSON, or Tailwind.Open configured tool →Open in Gradient StudioStart with Cool White and its complementary color.Open configured tool →Mix this colorBlend it with a complementary color and copy color-mix() CSS.Open configured tool →Check contrastOpen the strongest black or white background pairing.Open configured tool →Accessible combinationsReview AA and AAA text options, alternatives, warnings, and UI guidance.Open configured tool →Create glass surfaceUse this color as the tint for a translucent UI panel.Open configured tool →

CSS Utilities

--color-cool-white: #F4F8FF;
.bg-cool-white { background-color: #F4F8FF; }
.text-cool-white { color: #F4F8FF; }
Open CSS utility pageReusable variables, classes, examples, and implementation notes

Color meaning and use

About Cool White Color

Cool White uses HEX #F4F8FF, RGB 244, 248, 255, and HSL 218°, 100%, 98%. The dataset classifies it in the blue family with cool temperature and light and pastel visual character.

No separate named-color neighbor is recorded for this entry. Its relative luminance is 0.9359; black contrast is 19.72:1 and white contrast is 1.07:1, making black the stronger of those two standard foreground choices.

WCAG Accessibility

Contrast checks for Cool White against black and white text.

Black text19.72:1AA Pass
White text1.07:1AA Fail
AA text options#000000, #1A1A1A, #36454F
AAA text options#000000, #1A1A1A, #36454F
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Downloadable color reference infographic

Cool White Color Reference Infographic

Save a high-resolution infographic of Cool White, including its color values, coordinated palette, and black and white text contrast.

1200 × 800
Cool White color reference infographic showing #F4F8FF, RGB and HSL values, a coordinated palette, and black and white text contrast.
Cool White color reference infographic generated from the verified Colors Encyclopedia dataset.
Download WebPDownload SVGOpen full size

Color Harmonies

#FFFBF5#FFFBF5#F5FEFF#F5FEFF#F6F5FF#F6F5FF#FFF5F9#FFF5F9#F9FFF5#F9FFF5
Open full Cool White harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

White#FFFFFF#99BEFF#99BEFF#F5F9FF#F5F9FF#F6F9FE#F6F9FEWhite#FFFFFFWhite#FFFFFF

Pairings

Black#000000#FFFBF5#FFFBF5#F5FEFF#F5FEFF#F6F5FF#F6F5FFMatte Black#1A1A1AWhite Smoke#F5F5F5

Machine-readable data

Machine-Readable Color Data (JSON)

Perfect for CSS, design systems, automation, and AI ingestion.

AI-Ready Dataset v1.0.0
Luminance0.9359
Black text19.72:1AA Pass
White text1.07:1AA Fail
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
Download JSON Open API
Structured sections
Color systems
{
  "hex": "#F4F8FF",
  "rgb": [
    244,
    248,
    255
  ],
  "hsl": [
    218,
    100,
    98
  ],
  "cmyk": [
    4,
    3,
    0,
    0
  ],
  "luminance": 0.9359,
  "contrast": {
    "black": 19.72,
    "white": 1.07
  }
}
WCAG
{
  "AA": [
    "#000000",
    "#1A1A1A",
    "#36454F"
  ],
  "AAA": [
    "#000000",
    "#1A1A1A",
    "#36454F"
  ]
}
Harmonies
{
  "complementary": "#FFFBF5",
  "analogous": [
    "#F5FEFF",
    "#F6F5FF"
  ],
  "triadic": [
    "#FFF5F9",
    "#F9FFF5"
  ],
  "tetradic": [
    "#FFF5FE",
    "#FFFBF5",
    "#F5FFF6"
  ],
  "splitComplementary": [
    "#FFF6F5",
    "#FEFFF5"
  ],
  "monochromatic": [
    "#FFFFFF",
    "#F4F8FF",
    "#99BEFF"
  ]
}
Variants
{
  "light": "#FFFFFF",
  "dark": "#99BEFF",
  "saturated": "#F5F9FF",
  "desaturated": "#F6F9FE",
  "pastel": "#FFFFFF",
  "neon": "#FFFFFF"
}
Pairings
{
  "best": [
    "#000000",
    "#FFFBF5",
    "#F5FEFF",
    "#F6F5FF"
  ],
  "avoid": [
    "#F6F9FE",
    "#FFFFFF"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#000000"
  ],
  "lowContrast": [
    "#FFFFFF",
    "#F6F9FE"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "alice-blue",
    "ghost-white",
    "magnolia",
    "azure",
    "cloud"
  ],
  "generatedPalettes": [
    "cool-white"
  ],
  "generatedComparisons": [
    "alice-blue-vs-cool-white",
    "cool-white-vs-ghost-white",
    "magnolia-vs-cool-white",
    "mint-cream-vs-cool-white"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/light",
    "/colors/by-tone/pastel"
  ],
  "relatedTools": [
    "/harmonies/cool-white",
    "/wcag/cool-white",
    "/css/colors/cool-white",
    "/hex/f4f8ff",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/light",
      "/colors/by-tone/pastel"
    ],
    "narrower": [
      "/palettes/cool-white"
    ],
    "related": [
      "/colors/alice-blue",
      "/colors/ghost-white",
      "/colors/magnolia",
      "/colors/azure",
      "/colors/cloud",
      "/compare/alice-blue-vs-cool-white",
      "/compare/cool-white-vs-ghost-white",
      "/compare/magnolia-vs-cool-white",
      "/compare/mint-cream-vs-cool-white",
      "/harmonies/cool-white",
      "/wcag/cool-white",
      "/css/colors/cool-white",
      "/hex/f4f8ff",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  }
}
Full JSON dataset 
{
  "slug": "cool-white",
  "name": "Cool White",
  "hex": "#F4F8FF",
  "uses": [
    "neutral systems",
    "backgrounds",
    "editorial typography"
  ],
  "psychology": {
    "associations": [
      "quietness",
      "space",
      "balance"
    ],
    "contexts": [
      "UI surfaces",
      "interiors",
      "print-like layouts",
      "minimal branding"
    ],
    "avoidIn": [
      "high-visibility warning systems"
    ]
  },
  "aliases": [],
  "sourceType": "curated",
  "confidence": "medium",
  "reviewStatus": "manual",
  "sourceUrl": "https://www.colorsencyclopedia.com/assets/colors.json",
  "origin": {
    "type": "common",
    "notes": "Curated common color reference used in design, material, cultural, and editorial color systems."
  },
  "family": "blue",
  "temperature": "cool",
  "tone": [
    "light",
    "pastel"
  ],
  "editorialNotes": "Curated internal color record with computed technical properties.",
  "tags": [
    "blue",
    "cool",
    "light",
    "pastel",
    "neutral-systems",
    "backgrounds",
    "editorial-typography",
    "quietness",
    "space",
    "balance"
  ],
  "popularity": 84,
  "rgb": [
    244,
    248,
    255
  ],
  "hsl": [
    218,
    100,
    98
  ],
  "cmyk": [
    4,
    3,
    0,
    0
  ],
  "luminance": 0.9359,
  "contrast": {
    "black": 19.72,
    "white": 1.07
  },
  "harmonies": {
    "complementary": "#FFFBF5",
    "analogous": [
      "#F5FEFF",
      "#F6F5FF"
    ],
    "triadic": [
      "#FFF5F9",
      "#F9FFF5"
    ],
    "tetradic": [
      "#FFF5FE",
      "#FFFBF5",
      "#F5FFF6"
    ],
    "splitComplementary": [
      "#FFF6F5",
      "#FEFFF5"
    ],
    "monochromatic": [
      "#FFFFFF",
      "#F4F8FF",
      "#99BEFF"
    ]
  },
  "variants": {
    "light": "#FFFFFF",
    "dark": "#99BEFF",
    "saturated": "#F5F9FF",
    "desaturated": "#F6F9FE",
    "pastel": "#FFFFFF",
    "neon": "#FFFFFF"
  },
  "wcag": {
    "AA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "AAA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  },
  "css": {
    "variable": "--color-cool-white: #F4F8FF;",
    "utility": ".bg-cool-white { background-color: #F4F8FF; }",
    "textUtility": ".text-cool-white { color: #F4F8FF; }"
  },
  "nearestColors": [
    "alice-blue",
    "ghost-white",
    "magnolia",
    "azure",
    "cloud"
  ],
  "generatedPalettes": [
    "cool-white"
  ],
  "generatedComparisons": [
    "alice-blue-vs-cool-white",
    "cool-white-vs-ghost-white",
    "magnolia-vs-cool-white",
    "mint-cream-vs-cool-white"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/light",
    "/colors/by-tone/pastel"
  ],
  "relatedTools": [
    "/harmonies/cool-white",
    "/wcag/cool-white",
    "/css/colors/cool-white",
    "/hex/f4f8ff",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/light",
      "/colors/by-tone/pastel"
    ],
    "narrower": [
      "/palettes/cool-white"
    ],
    "related": [
      "/colors/alice-blue",
      "/colors/ghost-white",
      "/colors/magnolia",
      "/colors/azure",
      "/colors/cloud",
      "/compare/alice-blue-vs-cool-white",
      "/compare/cool-white-vs-ghost-white",
      "/compare/magnolia-vs-cool-white",
      "/compare/mint-cream-vs-cool-white",
      "/harmonies/cool-white",
      "/wcag/cool-white",
      "/css/colors/cool-white",
      "/hex/f4f8ff",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  },
  "pairings": {
    "best": [
      "#000000",
      "#FFFBF5",
      "#F5FEFF",
      "#F6F5FF"
    ],
    "avoid": [
      "#F6F9FE",
      "#FFFFFF"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#000000"
    ],
    "lowContrast": [
      "#FFFFFF",
      "#F6F9FE"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Similar Colors

Alice Blue#F0F8FF
Ghost White#F8F8FF
Magnolia#F8F4FF
Azure#F0FFFF
Cloud#F5F6F7

Related Color Guides

Blue color familyBrowse named blue colors and compare nearby swatches.Cool colorsExplore colors with cool temperature behavior.Light colorsFind colors with light visual character.Pastel colorsFind colors with pastel visual character.Cool White accessibilityCheck contrast and WCAG text options for #F4F8FF.Cool White CSS utilitiesUse Cool White in CSS variables and utility classes.#F4F8FF HEX atlasOpen the permanent HEX atlas record for conversions and variants.Cool White paletteOpen the generated palette based on Cool White.Cool White harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.