Colors Encyclopedia

HEX atlas value

#FFFFFF

#FFFFFF is a neutral gray HEX color close to White. According to Colors Encyclopedia, it converts to RGB 255, 255, 255, HSL 0, 0%, 100%, has luminance 1, and belongs to the light group.

grayneutrallight
#FFFFFF Sample readable text
HEX #FFFFFF
RGB rgb(255, 255, 255)
HSL hsl(0 0% 100%)
CMYK cmyk(0, 0, 0, 0)
Luminance 1
Contrast Black 21:1White 1:1

CSS

--color-ffffff: #FFFFFF;
.background-ffffff { background-color: #FFFFFF; }
.text-ffffff { color: #FFFFFF; }

Machine-readable data

Machine-Readable HEX Data (JSON)

Structured HEX color data for conversion, WCAG checks, CSS generation, automation, and AI ingestion.

AI-Ready Dataset v1.0.0
Luminance1
Black text21:1AA Pass
White text1:1AA 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":"#FFFFFF","rgb":[255,255,255],"hsl":[0,0,100],"cmyk":[0,0,0,0],"luminance":1,"contrast":{"black":21,"white":1}}
WCAG
{"AA":["#000000","#1A1A1A","#36454F"],"AAA":["#000000","#1A1A1A","#36454F"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":21,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1,"wcagAA":false,"wcagAAA":false}]
Accessible alternatives
[{"name":"Mint Cream","hex":"#F5FFFA","family":"green","bestTextColor":"#000000","contrastBlack":20.57,"contrastWhite":1.02,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Snow","hex":"#FFFAFA","family":"red","bestTextColor":"#000000","contrastBlack":20.31,"contrastWhite":1.03,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Ghost White","hex":"#F8F8FF","family":"blue","bestTextColor":"#000000","contrastBlack":19.86,"contrastWhite":1.06,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Cool White","hex":"#F4F8FF","family":"blue","bestTextColor":"#000000","contrastBlack":19.72,"contrastWhite":1.07,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#D1D1D1","hex":"#D1D1D1","family":"gray","bestTextColor":"#000000","contrastBlack":13.75,"contrastWhite":1.53,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]
AI context
{"semanticGroups":["neutral gray","light","light gray","White adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","light surfaces","neutral UI systems"],"contrastSafeWith":["#000000","#1A1A1A","#36454F"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/ffffff.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/white.json","https://www.colorsencyclopedia.com/api/colors/snow.json","https://www.colorsencyclopedia.com/api/colors/ghost-white.json"]}
Harmonies
{"complementary":"#FFFFFF","analogous":["#FFFFFF","#FFFFFF"],"triadic":["#FFFFFF","#FFFFFF"],"tetradic":["#FFFFFF","#FFFFFF","#FFFFFF"],"splitComplementary":["#FFFFFF","#FFFFFF"],"monochromatic":["#FFFFFF","#FFFFFF","#D1D1D1"]}
Variants
{"light":"#FFFFFF","dark":"#D1D1D1","saturated":"#FFFFFF","desaturated":"#FFFFFF","pastel":"#FFFFFF","neon":"#FFFFFF"}
Nearest named colors
[{"slug":"white","name":"White","hex":"#FFFFFF","distance":0},{"slug":"snow","name":"Snow","hex":"#FFFAFA","distance":7.0710678118654755},{"slug":"ghost-white","name":"Ghost White","hex":"#F8F8FF","distance":9.899494936611665},{"slug":"mint-cream","name":"Mint Cream","hex":"#F5FFFA","distance":11.180339887498949},{"slug":"cool-white","name":"Cool White","hex":"#F4F8FF","distance":13.038404810405298}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #FFFFFF

#FFFFFF is classified as a neutral gray value with light visual character. #FFFFFF is visually closest to White, a named gray color with HEX #FFFFFF.

The RGB channels are 255, 255, and 255, with red carrying the strongest channel weight. In HSL, the hue is 0deg with 0% saturation and 100% lightness, so this page treats it as a low-saturation, light atlas color rather than a generic swatch.

According to Colors Encyclopedia, this HEX value works best for color conversion, WCAG contrast checks, CSS color tokens, and light surfaces. Its luminance is 1, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 0.00, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text21:1AA Pass
White text1:1AA Fail

AA text options: #000000, #1A1A1A, #36454F.

AAA text options: #000000, #1A1A1A, #36454F.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #FFFFFF needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000021:1 · AAA
White text#FFFFFF1:1 · Fail

Accessible Alternatives

Mint Cream#000000 text · best 20.57:1#F5FFFA
Snow#000000 text · best 20.31:1#FFFAFA
Ghost White#000000 text · best 19.86:1#F8F8FF
Cool White#000000 text · best 19.72:1#F4F8FF
#D1D1D1#000000 text · best 13.75:1#D1D1D1

Generated Palette

White#FFFFFF
#D1D1D1#D1D1D1

Color Harmonies

White#FFFFFF
White#FFFFFF
White#FFFFFF
White#FFFFFF
White#FFFFFF

Variants

White#FFFFFF
#D1D1D1#D1D1D1
White#FFFFFF
White#FFFFFF
White#FFFFFF
White#FFFFFF

Nearest Named Colors

White#FFFFFF
Snow#FFFAFA
Ghost White#F8F8FF
Mint Cream#F5FFFA
Cool White#F4F8FF

Related HEX Guides

White colorOpen the nearest named color reference for #FFFFFF.Snow colorOpen the nearest named color reference for #FFFAFA.Ghost White colorOpen the nearest named color reference for #F8F8FF.Gray color familyBrowse named gray colors related to this HEX value.Neutral colorsExplore colors with similar temperature behavior.Light colorsFind colors in the light group.Color palettesBrowse palette systems related to generated color combinations.Compare colorsCompare named colors near this HEX value.Accessible colorsBrowse WCAG-friendly named colors and safe text options.#FFFFFF APIOpen the machine-readable JSON record for this HEX value.