HEX atlas value

#B9BF18

#B9BF18 is a warm yellow HEX color close to Acid Green. According to Colors Encyclopedia, it converts to RGB 185, 191, 24, HSL 62, 78%, 42%, has luminance 0.4764, and belongs to the vibrant group.

yellow warm vibrant

#B9BF18 Sample readable text

HEX #B9BF18

RGB rgb(185, 191, 24)

HSL hsl(62 78% 42%)

CMYK cmyk(3, 0, 87, 25)

Luminance 0.4764

Contrast Black 10.53:1White 1.99:1

CSS

--color-b9bf18: #B9BF18;
.background-b9bf18 { background-color: #B9BF18; }
.text-b9bf18 { color: #B9BF18; }

Luminance0.4764

Black text10.53:1AA Pass

White text1.99:1AA 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":"#B9BF18","rgb":[185,191,24],"hsl":[62,78,42],"cmyk":[3,0,87,25],"luminance":0.4764,"contrast":{"black":10.53,"white":1.99}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":10.53,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.99,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#E3E949","hex":"#E3E949","family":"yellow","bestTextColor":"#000000","contrastBlack":16.02,"contrastWhite":1.31,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#CFD600","hex":"#CFD600","family":"yellow","bestTextColor":"#000000","contrastBlack":13.27,"contrastWhite":1.58,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Yellow Green","hex":"#9ACD32","family":"green","bestTextColor":"#000000","contrastBlack":11.15,"contrastWhite":1.88,"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":"#1D18BF","hex":"#1D18BF","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.94,"contrastWhite":10.85,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

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/b9bf18.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/old-gold.json"]}

Harmonies

{"complementary":"#1D18BF","analogous":["#BF7118","#66BF18"],"triadic":["#18B9BF","#BF18B9"],"tetradic":["#18BF71","#1D18BF","#BF1866"],"splitComplementary":["#1866BF","#7118BF"],"monochromatic":["#E3E949","#B9BF18","#6A6D0D"]}

Variants

{"light":"#E3E949","dark":"#6A6D0D","saturated":"#CFD600","desaturated":"#A3A72F","pastel":"#DCE076","neon":"#F6FF00"}

Nearest named colors

[{"slug":"acid-green","name":"Acid Green","hex":"#B0BF1A","distance":9.219544457292887},{"slug":"peridot","name":"Peridot","hex":"#B4C424","distance":13.92838827718412},{"slug":"old-gold","name":"Old Gold","hex":"#CFB53B","distance":42.532340636273474},{"slug":"goldenrod","name":"Goldenrod","hex":"#DAA520","distance":42.76680956068619},{"slug":"yellow-green","name":"Yellow Green","hex":"#9ACD32","distance":42.81354925721529}]

HEX meaning and use

About #B9BF18

#B9BF18 is classified as a warm yellow value with vibrant visual character. #B9BF18 is visually closest to Acid Green, a named yellow color with HEX #B0BF1A.

The RGB channels are 185, 191, and 24, with green carrying the strongest channel weight. In HSL, the hue is 62deg 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 0.4764, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 9.22, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text10.53:1AA Pass

White text1.99:1AA Fail

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

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #B9BF18 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000010.53:1 · AAA

White text#FFFFFF1.99:1 · Fail

Accessible Alternatives

#E3E949#000000 text · best 16.02:1#E3E949

#CFD600#000000 text · best 13.27:1#CFD600

Yellow Green#000000 text · best 11.15:1#9ACD32

Peridot#000000 text · best 10.86:1#B4C424

#1D18BF#FFFFFF text · best 10.85:1#1D18BF

Generated Palette

#B9BF18#B9BF18

#1D18BF#1D18BF

#BF7118#BF7118

#66BF18#66BF18

#E3E949#E3E949

#6A6D0D#6A6D0D

Color Harmonies

#1D18BF#1D18BF

#BF7118#BF7118

#66BF18#66BF18

#18B9BF#18B9BF

#BF18B9#BF18B9

Variants

#E3E949#E3E949

#6A6D0D#6A6D0D

#CFD600#CFD600

#A3A72F#A3A72F

#DCE076#DCE076

#F6FF00#F6FF00

Nearest Named Colors

Acid Green#B0BF1A

Peridot#B4C424

Old Gold#CFB53B

Goldenrod#DAA520

Yellow Green#9ACD32

#B9BF18

CSS

Machine-Readable HEX Data (JSON)

About #B9BF18

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides