Colors Encyclopedia

HEX atlas value

#FFBF00

#FFBF00 is a warm yellow HEX color close to Amber. According to Colors Encyclopedia, it converts to RGB 255, 191, 0, HSL 45, 100%, 50%, has luminance 0.5852, and belongs to the vibrant group.

yellowwarmvibrant
#FFBF00 Sample readable text
HEX #FFBF00
RGB rgb(255, 191, 0)
HSL hsl(45 100% 50%)
CMYK cmyk(0, 25, 100, 0)
Luminance 0.5852
Contrast Black 12.7:1White 1.65:1

CSS

--color-ffbf00: #FFBF00;
.background-ffbf00 { background-color: #FFBF00; }
.text-ffbf00 { color: #FFBF00; }

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
Luminance0.5852
Black text12.7:1AA Pass
White text1.65:1AA 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":"#FFBF00","rgb":[255,191,0],"hsl":[45,100,50],"cmyk":[0,25,100,0],"luminance":0.5852,"contrast":{"black":12.7,"white":1.65}}
WCAG
{"AA":["#000000","#1A1A1A","#36454F"],"AAA":["#000000","#1A1A1A"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":12.7,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.65,"wcagAA":false,"wcagAAA":false}]
Accessible alternatives
[{"name":"#BFFF00","hex":"#BFFF00","family":"green","bestTextColor":"#000000","contrastBlack":17.52,"contrastWhite":1.2,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#FFD65C","hex":"#FFD65C","family":"yellow","bestTextColor":"#000000","contrastBlack":15.03,"contrastWhite":1.4,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Caution Yellow","hex":"#FFCC00","family":"yellow","bestTextColor":"#000000","contrastBlack":13.89,"contrastWhite":1.51,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Honey","hex":"#FFC30B","family":"yellow","bestTextColor":"#000000","contrastBlack":13.06,"contrastWhite":1.61,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Industrial Yellow","hex":"#F3C300","family":"yellow","bestTextColor":"#000000","contrastBlack":12.62,"contrastWhite":1.66,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]
AI context
{"semanticGroups":["warm yellow","vibrant","vibrant yellow","Amber 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/ffbf00.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/amber.json","https://www.colorsencyclopedia.com/api/colors/fluorescent-orange.json","https://www.colorsencyclopedia.com/api/colors/honey.json"]}
Harmonies
{"complementary":"#0040FF","analogous":["#FF4000","#BFFF00"],"triadic":["#00FFBF","#BF00FF"],"tetradic":["#00FF40","#0040FF","#FF00BF"],"splitComplementary":["#00BFFF","#4000FF"],"monochromatic":["#FFD65C","#FFBF00","#A37A00"]}
Variants
{"light":"#FFD65C","dark":"#A37A00","saturated":"#FFBF00","desaturated":"#E3B11C","pastel":"#F5DA89","neon":"#FFC929"}
Nearest named colors
[{"slug":"amber","name":"Amber","hex":"#FFBF00","distance":0},{"slug":"fluorescent-orange","name":"Fluorescent Orange","hex":"#FFBF00","distance":0},{"slug":"honey","name":"Honey","hex":"#FFC30B","distance":11.704699910719626},{"slug":"industrial-yellow","name":"Industrial Yellow","hex":"#F3C300","distance":12.649110640673518},{"slug":"caution-yellow","name":"Caution Yellow","hex":"#FFCC00","distance":13}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #FFBF00

#FFBF00 is classified as a warm yellow value with vibrant visual character. #FFBF00 is visually closest to Amber, a named yellow color with HEX #FFBF00.

The RGB channels are 255, 191, and 0, with red carrying the strongest channel weight. In HSL, the hue is 45deg 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 0.5852, 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 text12.7:1AA Pass
White text1.65:1AA Fail

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

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #FFBF00 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000012.7:1 · AAA
White text#FFFFFF1.65:1 · Fail

Accessible Alternatives

#BFFF00#000000 text · best 17.52:1#BFFF00
#FFD65C#000000 text · best 15.03:1#FFD65C
Caution Yellow#000000 text · best 13.89:1#FFCC00
Honey#000000 text · best 13.06:1#FFC30B
Industrial Yellow#000000 text · best 12.62:1#F3C300

Generated Palette

Fluorescent Orange#FFBF00
#0040FF#0040FF
#FF4000#FF4000
#BFFF00#BFFF00
#FFD65C#FFD65C
#A37A00#A37A00

Color Harmonies

#0040FF#0040FF
#FF4000#FF4000
#BFFF00#BFFF00
#00FFBF#00FFBF
Electric Purple#BF00FF

Variants

#FFD65C#FFD65C
#A37A00#A37A00
Fluorescent Orange#FFBF00
#E3B11C#E3B11C
#F5DA89#F5DA89
#FFC929#FFC929

Nearest Named Colors

Amber#FFBF00
Fluorescent Orange#FFBF00
Honey#FFC30B
Industrial Yellow#F3C300
Caution Yellow#FFCC00

Related HEX Guides

Amber colorOpen the nearest named color reference for #FFBF00.Fluorescent Orange colorOpen the nearest named color reference for #FFBF00.Honey colorOpen the nearest named color reference for #FFC30B.Yellow color familyBrowse named yellow colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Vibrant colorsFind colors in the vibrant 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.#FFBF00 APIOpen the machine-readable JSON record for this HEX value.