HEX atlas value

#FFF01F

#FFF01F is a warm yellow HEX color close to Neon Yellow. According to Colors Encyclopedia, it converts to RGB 255, 240, 31, HSL 56, 100%, 56%, has luminance 0.8368, and belongs to the vibrant group.

yellow warm vibrant

#FFF01F Sample readable text

HEX #FFF01F

RGB rgb(255, 240, 31)

HSL hsl(56 100% 56%)

CMYK cmyk(0, 6, 88, 0)

Luminance 0.8368

Contrast Black 17.74:1White 1.18:1

CSS

--color-fff01f: #FFF01F;
.background-fff01f { background-color: #FFF01F; }
.text-fff01f { color: #FFF01F; }

Luminance0.8368

Black text17.74:1AA Pass

White text1.18:1AA 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":"#FFF01F","rgb":[255,240,31],"hsl":[56,100,56],"cmyk":[0,6,88,0],"luminance":0.8368,"contrast":{"black":17.74,"white":1.18}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":17.74,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.18,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"Daffodil","hex":"#FFFF31","family":"yellow","bestTextColor":"#000000","contrastBlack":19.6,"contrastWhite":1.07,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#FFF67A","hex":"#FFF67A","family":"yellow","bestTextColor":"#000000","contrastBlack":18.72,"contrastWhite":1.12,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Cadmium Yellow","hex":"#FFF600","family":"yellow","bestTextColor":"#000000","contrastBlack":18.43,"contrastWhite":1.14,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Canary Yellow","hex":"#FFEF00","family":"yellow","bestTextColor":"#000000","contrastBlack":17.6,"contrastWhite":1.19,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#9EFF1F","hex":"#9EFF1F","family":"green","bestTextColor":"#000000","contrastBlack":16.78,"contrastWhite":1.25,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]}]

AI context

{"semanticGroups":["warm yellow","vibrant","vibrant yellow","Neon 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/fff01f.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/neon-yellow.json","https://www.colorsencyclopedia.com/api/colors/daffodil.json","https://www.colorsencyclopedia.com/api/colors/dandelion.json"]}

Harmonies

{"complementary":"#1F2EFF","analogous":["#FF801F","#9EFF1F"],"triadic":["#1FFFF0","#F01FFF"],"tetradic":["#1FFF80","#1F2EFF","#FF1F9E"],"splitComplementary":["#1F9EFF","#801FFF"],"monochromatic":["#FFF67A","#FFF01F","#C2B500"]}

Variants

{"light":"#FFF67A","dark":"#C2B500","saturated":"#FFF01F","desaturated":"#E6DB37","pastel":"#F8F2A5","neon":"#FFF347"}

Nearest named colors

[{"slug":"neon-yellow","name":"Neon Yellow","hex":"#FFF01F","distance":0},{"slug":"daffodil","name":"Daffodil","hex":"#FFFF31","distance":23.430749027719962},{"slug":"dandelion","name":"Dandelion","hex":"#F0E130","distance":27.184554438136374},{"slug":"canary-yellow","name":"Canary Yellow","hex":"#FFEF00","distance":31.016124838541646},{"slug":"cadmium-yellow","name":"Cadmium Yellow","hex":"#FFF600","distance":31.575306807693888}]

HEX meaning and use

About #FFF01F

#FFF01F is classified as a warm yellow value with vibrant visual character. #FFF01F is visually closest to Neon Yellow, a named yellow color with HEX #FFF01F.

The RGB channels are 255, 240, and 31, with red carrying the strongest channel weight. In HSL, the hue is 56deg with 100% saturation and 56% 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 0.8368, 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 text17.74:1AA Pass

White text1.18:1AA Fail

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

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

Accessibility-Safe Pairings and Alternatives

Use these pairings when #FFF01F needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000017.74:1 · AAA

White text#FFFFFF1.18:1 · Fail

Accessible Alternatives

Daffodil#000000 text · best 19.6:1#FFFF31

#FFF67A#000000 text · best 18.72:1#FFF67A

Cadmium Yellow#000000 text · best 18.43:1#FFF600

Canary Yellow#000000 text · best 17.6:1#FFEF00

#9EFF1F#000000 text · best 16.78:1#9EFF1F

Generated Palette

Neon Yellow#FFF01F

#1F2EFF#1F2EFF

#FF801F#FF801F

#9EFF1F#9EFF1F

#FFF67A#FFF67A

#C2B500#C2B500

Color Harmonies

#1F2EFF#1F2EFF

#FF801F#FF801F

#9EFF1F#9EFF1F

#1FFFF0#1FFFF0

#F01FFF#F01FFF

Variants

#FFF67A#FFF67A

#C2B500#C2B500

Neon Yellow#FFF01F

#E6DB37#E6DB37

#F8F2A5#F8F2A5

#FFF347#FFF347

Nearest Named Colors

Neon Yellow#FFF01F

Daffodil#FFFF31

Dandelion#F0E130

Canary Yellow#FFEF00

Cadmium Yellow#FFF600

#FFF01F

CSS

Machine-Readable HEX Data (JSON)

About #FFF01F

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides