HEX atlas value

#BFBC18

#BFBC18 is a warm yellow HEX color close to Acid Green. According to Colors Encyclopedia, it converts to RGB 191, 188, 24, HSL 59, 78%, 42%, has luminance 0.4711, and belongs to the vibrant group.

yellow warm vibrant

#BFBC18 Sample readable text

HEX #BFBC18

RGB rgb(191, 188, 24)

HSL hsl(59 78% 42%)

CMYK cmyk(0, 2, 87, 25)

Luminance 0.4711

Contrast Black 10.42:1White 2.01:1

CSS

--color-bfbc18: #BFBC18;
.background-bfbc18 { background-color: #BFBC18; }
.text-bfbc18 { color: #BFBC18; }

Luminance0.4711

Black text10.42:1AA Pass

White text2.01:1AA 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":"#BFBC18","rgb":[191,188,24],"hsl":[59,78,42],"cmyk":[0,2,87,25],"luminance":0.4711,"contrast":{"black":10.42,"white":2.01}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":10.42,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.01,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#E9E649","hex":"#E9E649","family":"yellow","bestTextColor":"#000000","contrastBlack":15.88,"contrastWhite":1.32,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#D6D300","hex":"#D6D300","family":"yellow","bestTextColor":"#000000","contrastBlack":13.18,"contrastWhite":1.59,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Peridot","hex":"#B4C424","family":"yellow","bestTextColor":"#000000","contrastBlack":10.86,"contrastWhite":1.93,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#181ABF","hex":"#181ABF","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.94,"contrastWhite":10.84,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Old Gold","hex":"#CFB53B","family":"yellow","bestTextColor":"#000000","contrastBlack":10.33,"contrastWhite":2.03,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["warm yellow","vibrant","vibrant yellow","Acid Green 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/bfbc18.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/acid-green.json","https://www.colorsencyclopedia.com/api/colors/peridot.json","https://www.colorsencyclopedia.com/api/colors/goldenrod.json"]}

Harmonies

{"complementary":"#181ABF","analogous":["#BF6818","#6EBF18"],"triadic":["#18BFBC","#BC18BF"],"tetradic":["#18BF68","#181ABF","#BF186E"],"splitComplementary":["#186EBF","#6818BF"],"monochromatic":["#E9E649","#BFBC18","#6D6B0D"]}

Variants

{"light":"#E9E649","dark":"#6D6B0D","saturated":"#D6D300","desaturated":"#A7A52F","pastel":"#E0DE76","neon":"#FFFB00"}

Nearest named colors

[{"slug":"acid-green","name":"Acid Green","hex":"#B0BF1A","distance":15.427248620541512},{"slug":"peridot","name":"Peridot","hex":"#B4C424","distance":18.138357147217054},{"slug":"goldenrod","name":"Goldenrod","hex":"#DAA520","distance":36.359317925395686},{"slug":"old-gold","name":"Old Gold","hex":"#CFB53B","distance":39.11521443121589},{"slug":"mustard-yellow","name":"Mustard Yellow","hex":"#E1AD01","distance":43.70354676682432}]

HEX meaning and use

About #BFBC18

#BFBC18 is classified as a warm yellow value with vibrant visual character. #BFBC18 is visually closest to Acid Green, a named yellow color with HEX #B0BF1A.

The RGB channels are 191, 188, and 24, with red carrying the strongest channel weight. In HSL, the hue is 59deg with 78% saturation and 42% 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 0.4711, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 15.43, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text10.42:1AA Pass

White text2.01:1AA Fail

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

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #BFBC18 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000010.42:1 · AAA

White text#FFFFFF2.01:1 · Fail

Accessible Alternatives

#E9E649#000000 text · best 15.88:1#E9E649

#D6D300#000000 text · best 13.18:1#D6D300

Peridot#000000 text · best 10.86:1#B4C424

#181ABF#FFFFFF text · best 10.84:1#181ABF

Old Gold#000000 text · best 10.33:1#CFB53B

Generated Palette

#BFBC18#BFBC18

#181ABF#181ABF

#BF6818#BF6818

#6EBF18#6EBF18

#E9E649#E9E649

#6D6B0D#6D6B0D

Color Harmonies

#181ABF#181ABF

#BF6818#BF6818

#6EBF18#6EBF18

#18BFBC#18BFBC

#BC18BF#BC18BF

Variants

#E9E649#E9E649

#6D6B0D#6D6B0D

#D6D300#D6D300

#A7A52F#A7A52F

#E0DE76#E0DE76

#FFFB00#FFFB00

Nearest Named Colors

Acid Green#B0BF1A

Peridot#B4C424

Goldenrod#DAA520

Old Gold#CFB53B

Mustard Yellow#E1AD01

#BFBC18

CSS

Machine-Readable HEX Data (JSON)

About #BFBC18

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides