HEX atlas value

#FFDF00

#FFDF00 is a warm yellow HEX color nearest Golden Yellow. RGB 255, 223, 0, HSL 52° 100% 50%, luminance 0.7404; view contrast and conversions.

yellow warm vibrant

#FFDF00 Sample readable text

HEX #FFDF00

RGB rgb(255, 223, 0)

HSL hsl(52 100% 50%)

CMYK cmyk(0, 13, 100, 0)

Luminance 0.7404

Contrast Black 15.81:1White 1.33:1

CSS

--color-ffdf00: #FFDF00;
.background-ffdf00 { background-color: #FFDF00; }
.text-ffdf00 { color: #FFDF00; }

HEX meaning and use

About #FFDF00

#FFDF00 is classified as a warm yellow value with vibrant visual character. #FFDF00 is visually closest to Golden Yellow, a named yellow color with HEX #FFDF00.

The RGB channels are 255, 223, and 0, with red carrying the strongest channel weight. In HSL, the hue is 52deg with 100% saturation and 50% lightness, so this page treats it as a high-saturation, mid-lightness atlas color rather than a generic swatch.

Practical uses for this HEX value include color conversion, WCAG contrast checks, CSS color tokens, and high-energy accents. Its luminance is 0.7404, 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 text15.81:1AA Pass

White text1.33:1AA Fail

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

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

Accessibility-Safe Pairings and Alternatives

Use these pairings when #FFDF00 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000015.81:1 · AAA

White text#FFFFFF1.33:1 · Fail

Accessible Alternatives

Canary Yellow#FFEF00 · #000000 text · best 17.6:1 #FFE95C#FFE95C · #000000 text · best 17.06:1 #A1FF00#A1FF00 · #000000 text · best 16.82:1 #FFDD00#FFDD00 · #000000 text · best 15.59:1 School Bus Yellow#FFD800 · #000000 text · best 15.07:1

Generated Palette

Golden Yellow#FFDF00

#0022FF#0022FF

#FF5E00#FF5E00

#A1FF00#A1FF00

#FFE95C#FFE95C

#A38D00#A38D00

Color Harmonies

#0022FF#0022FF

#FF5E00#FF5E00

#A1FF00#A1FF00

#00FFDD#00FFDD

#DD00FF#DD00FF

Variants

#FFE95C#FFE95C

#A38D00#A38D00

#FFDD00#FFDD00

#E3C81C#E3C81C

#F5E789#F5E789

#FFE229#FFE229

Nearest Named Colors

Golden Yellow#FFDF00

School Bus Yellow#FFD800

Gold#FFD700

Cyber Yellow#FFD300

Canary Yellow#FFEF00

Luminance0.7404

Black text15.81:1AA Pass

White text1.33:1AA 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":"#FFDF00","rgb":[255,223,0],"hsl":[52,100,50],"cmyk":[0,13,100,0],"luminance":0.7404,"contrast":{"black":15.81,"white":1.33}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":15.81,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.33,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"Canary Yellow","hex":"#FFEF00","family":"yellow","bestTextColor":"#000000","contrastBlack":17.6,"contrastWhite":1.19,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#FFE95C","hex":"#FFE95C","family":"yellow","bestTextColor":"#000000","contrastBlack":17.06,"contrastWhite":1.23,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#A1FF00","hex":"#A1FF00","family":"green","bestTextColor":"#000000","contrastBlack":16.82,"contrastWhite":1.25,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#FFDD00","hex":"#FFDD00","family":"yellow","bestTextColor":"#000000","contrastBlack":15.59,"contrastWhite":1.35,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"School Bus Yellow","hex":"#FFD800","family":"yellow","bestTextColor":"#000000","contrastBlack":15.07,"contrastWhite":1.39,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]}]

AI context

{"semanticGroups":["warm yellow","vibrant","vibrant yellow","Golden 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/ffdf00.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/golden-yellow.json","https://www.colorsencyclopedia.com/api/colors/school-bus-yellow.json","https://www.colorsencyclopedia.com/api/colors/gold.json"]}

Harmonies

{"complementary":"#0022FF","analogous":["#FF5E00","#A1FF00"],"triadic":["#00FFDD","#DD00FF"],"tetradic":["#00FF5E","#0022FF","#FF00A1"],"splitComplementary":["#00A1FF","#5E00FF"],"monochromatic":["#FFE95C","#FFDF00","#A38D00"]}

Variants

{"light":"#FFE95C","dark":"#A38D00","saturated":"#FFDD00","desaturated":"#E3C81C","pastel":"#F5E789","neon":"#FFE229"}

Nearest named colors

[{"slug":"golden-yellow","name":"Golden Yellow","hex":"#FFDF00","distance":0},{"slug":"school-bus-yellow","name":"School Bus Yellow","hex":"#FFD800","distance":7},{"slug":"gold","name":"Gold","hex":"#FFD700","distance":8},{"slug":"cyber-yellow","name":"Cyber Yellow","hex":"#FFD300","distance":12},{"slug":"canary-yellow","name":"Canary Yellow","hex":"#FFEF00","distance":16}]

#FFDF00

CSS

About #FFDF00

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Machine-Readable HEX Data (JSON)

Related HEX Guides