HEX atlas value

#FFD800

#FFD800 is a warm yellow HEX color close to School Bus Yellow. According to Colors Encyclopedia, it converts to RGB 255, 216, 0, HSL 51, 100%, 50%, has luminance 0.7037, and belongs to the vibrant group.

yellow warm vibrant

#FFD800 Sample readable text

HEX #FFD800

RGB rgb(255, 216, 0)

HSL hsl(51 100% 50%)

CMYK cmyk(0, 15, 100, 0)

Luminance 0.7037

Contrast Black 15.07:1White 1.39:1

CSS

--color-ffd800: #FFD800;
.background-ffd800 { background-color: #FFD800; }
.text-ffd800 { color: #FFD800; }

Luminance0.7037

Black text15.07:1AA Pass

White text1.39:1AA 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

Structured sections

Color systems

{"hex":"#FFD800","rgb":[255,216,0],"hsl":[51,100,50],"cmyk":[0,15,100,0],"luminance":0.7037,"contrast":{"black":15.07,"white":1.39}}

WCAG

{"AA":["#000000","#1A1A1A","#36454F"],"AAA":["#000000","#1A1A1A","#36454F"]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":15.07,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.39,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#A6FF00","hex":"#A6FF00","family":"green","bestTextColor":"#000000","contrastBlack":16.93,"contrastWhite":1.24,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#FFE75C","hex":"#FFE75C","family":"yellow","bestTextColor":"#000000","contrastBlack":16.84,"contrastWhite":1.25,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Golden Yellow","hex":"#FFDF00","family":"yellow","bestTextColor":"#000000","contrastBlack":15.81,"contrastWhite":1.33,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#FFD900","hex":"#FFD900","family":"yellow","bestTextColor":"#000000","contrastBlack":15.18,"contrastWhite":1.38,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Gold","hex":"#FFD700","family":"yellow","bestTextColor":"#000000","contrastBlack":14.97,"contrastWhite":1.4,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]}]

AI context

{"semanticGroups":["warm yellow","vibrant","vibrant yellow","School Bus Yellow adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","highlight and warning systems"],"contrastSafeWith":["#000000","#1A1A1A","#36454F"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/ffd800.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/school-bus-yellow.json","https://www.colorsencyclopedia.com/api/colors/gold.json","https://www.colorsencyclopedia.com/api/colors/cyber-yellow.json"]}

Harmonies

{"complementary":"#0026FF","analogous":["#FF5900","#A6FF00"],"triadic":["#00FFD9","#D900FF"],"tetradic":["#00FF59","#0026FF","#FF00A6"],"splitComplementary":["#00A6FF","#5900FF"],"monochromatic":["#FFE75C","#FFD800","#A38B00"]}

Variants

{"light":"#FFE75C","dark":"#A38B00","saturated":"#FFD900","desaturated":"#E3C51C","pastel":"#F5E589","neon":"#FFDF29"}

Nearest named colors

[{"slug":"school-bus-yellow","name":"School Bus Yellow","hex":"#FFD800","distance":0},{"slug":"gold","name":"Gold","hex":"#FFD700","distance":1},{"slug":"cyber-yellow","name":"Cyber Yellow","hex":"#FFD300","distance":5},{"slug":"golden-yellow","name":"Golden Yellow","hex":"#FFDF00","distance":7},{"slug":"caution-yellow","name":"Caution Yellow","hex":"#FFCC00","distance":12}]

HEX meaning and use

About #FFD800

#FFD800 is classified as a warm yellow value with vibrant visual character. #FFD800 is visually closest to School Bus Yellow, a named yellow color with HEX #FFD800.

The RGB channels are 255, 216, and 0, with red carrying the strongest channel weight. In HSL, the hue is 51deg with 100% saturation and 50% lightness, so this page treats it as a high-saturation, mid-lightness 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 high-energy accents. Its luminance is 0.7037, 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 text15.07:1AA Pass

White text1.39:1AA Fail

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

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

Accessibility-Safe Pairings and Alternatives

Use these pairings when #FFD800 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000015.07:1 · AAA

White text#FFFFFF1.39:1 · Fail

Accessible Alternatives

#A6FF00#000000 text · best 16.93:1#A6FF00

#FFE75C#000000 text · best 16.84:1#FFE75C

Golden Yellow#000000 text · best 15.81:1#FFDF00

#FFD900#000000 text · best 15.18:1#FFD900

Gold#000000 text · best 14.97:1#FFD700

Generated Palette

School Bus Yellow#FFD800

#0026FF#0026FF

#FF5900#FF5900

#A6FF00#A6FF00

#FFE75C#FFE75C

#A38B00#A38B00

Color Harmonies

#0026FF#0026FF

#FF5900#FF5900

#A6FF00#A6FF00

#00FFD9#00FFD9

#D900FF#D900FF

Variants

#FFE75C#FFE75C

#A38B00#A38B00

#FFD900#FFD900

#E3C51C#E3C51C

#F5E589#F5E589

#FFDF29#FFDF29

Nearest Named Colors

School Bus Yellow#FFD800

Gold#FFD700

Cyber Yellow#FFD300

Golden Yellow#FFDF00

Caution Yellow#FFCC00

#FFD800

CSS

Machine-Readable HEX Data (JSON)

About #FFD800

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides