Colors Encyclopedia

Named color

Cool White

Cool White is a light and pastel blue color with HEX #F4F8FF. According to Colors Encyclopedia, it has RGB 244, 248, 255, HSL 218, 100%, 98%, cool temperature, and is useful for neutral systems, backgrounds, and editorial typography.

#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

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

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"
  ],
  "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"
    ]
  }
}
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"
  ],
  "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"
    ]
  },
  "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

Color meaning and use

About Cool White Color

Cool White sits in the blue family with cool temperature and light and pastel visual character. Cool White is a commonly used color name in design references, palettes, and editorial color systems.

Its common associations include quietness, space, and balance, which makes it relevant for UI surfaces and interiors. In design work, Cool White is most useful for neutral systems, backgrounds, and editorial typography, especially when paired with black text for stronger contrast.

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.

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

Similar Colors

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

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#F6F9FE
White#FFFFFF
White#FFFFFF

Pairings

Black#000000
#FFFBF5#FFFBF5
#F5FEFF#F5FEFF
#F6F5FF#F6F5FF
Matte Black#1A1A1A
White Smoke#F5F5F5