Colors Encyclopedia

HEX atlas value

#BBB181

#BBB181 is a warm yellow HEX color close to Ecru. According to Colors Encyclopedia, it converts to RGB 187, 177, 129, HSL 50, 30%, 62%, has luminance 0.4359, and belongs to the earth tone group.

yellowwarmearth-tone
#BBB181 Sample readable text
HEX #BBB181
RGB rgb(187, 177, 129)
HSL hsl(50 30% 62%)
CMYK cmyk(0, 5, 31, 27)
Luminance 0.4359
Contrast Black 9.72:1White 2.16:1

CSS

--color-bbb181: #BBB181;
.background-bbb181 { background-color: #BBB181; }
.text-bbb181 { color: #BBB181; }

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
Luminance0.4359
Black text9.72:1AA Pass
White text2.16:1AA 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":"#BBB181","rgb":[187,177,129],"hsl":[50,30,62],"cmyk":[0,5,31,27],"luminance":0.4359,"contrast":{"black":9.72,"white":2.16}}
WCAG
{"AA":["#000000","#1A1A1A","#36454F"],"AAA":["#000000","#1A1A1A"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":9.72,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.16,"wcagAA":false,"wcagAAA":false}]
Accessible alternatives
[{"name":"#DBD6BD","hex":"#DBD6BD","family":"yellow","bestTextColor":"#000000","contrastBlack":14.37,"contrastWhite":1.46,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#D0C06C","hex":"#D0C06C","family":"yellow","bestTextColor":"#000000","contrastBlack":11.44,"contrastWhite":1.84,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Bamboo","hex":"#C7B56E","family":"yellow","bestTextColor":"#000000","contrastBlack":10.26,"contrastWhite":2.05,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#A8BB81","hex":"#A8BB81","family":"green","bestTextColor":"#000000","contrastBlack":10.09,"contrastWhite":2.08,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Sand","hex":"#C2B280","family":"yellow","bestTextColor":"#000000","contrastBlack":9.97,"contrastWhite":2.11,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]
AI context
{"semanticGroups":["warm yellow","earth tone","earth tone yellow","Ecru adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","natural palettes","highlight and warning systems"],"contrastSafeWith":["#000000","#1A1A1A","#36454F"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/bbb181.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/ecru.json","https://www.colorsencyclopedia.com/api/colors/sand.json","https://www.colorsencyclopedia.com/api/colors/sage-gray.json"]}
Harmonies
{"complementary":"#818BBB","analogous":["#BB9481","#A8BB81"],"triadic":["#81BBB1","#B181BB"],"tetradic":["#81BB94","#818BBB","#BB81A8"],"splitComplementary":["#81A8BB","#9481BB"],"monochromatic":["#DBD6BD","#BBB181","#92874F"]}
Variants
{"light":"#DBD6BD","dark":"#92874F","saturated":"#D0C06C","desaturated":"#A6A396","pastel":"#E3E1D9","neon":"#FFE666"}
Nearest named colors
[{"slug":"ecru","name":"Ecru","hex":"#C2B280","distance":7.14142842854285},{"slug":"sand","name":"Sand","hex":"#C2B280","distance":7.14142842854285},{"slug":"sage-gray","name":"Sage Gray","hex":"#B2AC88","distance":12.449899597988733},{"slug":"sandstone","name":"Sandstone","hex":"#C9AE74","distance":19.339079605813716},{"slug":"bamboo","name":"Bamboo","hex":"#C7B56E","distance":22.825424421026653}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #BBB181

#BBB181 is classified as a warm yellow value with earth tone visual character. #BBB181 is visually closest to Ecru, a named yellow color with HEX #C2B280.

The RGB channels are 187, 177, and 129, with red carrying the strongest channel weight. In HSL, the hue is 50deg with 30% saturation and 62% lightness, so this page treats it as a low-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 natural palettes. Its luminance is 0.4359, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 7.14, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text9.72:1AA Pass
White text2.16:1AA Fail

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

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #BBB181 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000009.72:1 · AAA
White text#FFFFFF2.16:1 · Fail

Accessible Alternatives

#DBD6BD#000000 text · best 14.37:1#DBD6BD
#D0C06C#000000 text · best 11.44:1#D0C06C
Bamboo#000000 text · best 10.26:1#C7B56E
#A8BB81#000000 text · best 10.09:1#A8BB81
Sand#000000 text · best 9.97:1#C2B280

Generated Palette

#BBB181#BBB181
#818BBB#818BBB
#BB9481#BB9481
#A8BB81#A8BB81
#DBD6BD#DBD6BD
#92874F#92874F

Color Harmonies

#818BBB#818BBB
#BB9481#BB9481
#A8BB81#A8BB81
#81BBB1#81BBB1
#B181BB#B181BB

Variants

#DBD6BD#DBD6BD
#92874F#92874F
#D0C06C#D0C06C
#A6A396#A6A396
#E3E1D9#E3E1D9
#FFE666#FFE666

Nearest Named Colors

Ecru#C2B280
Sand#C2B280
Sage Gray#B2AC88
Sandstone#C9AE74
Bamboo#C7B56E

Related HEX Guides

Ecru colorOpen the nearest named color reference for #C2B280.Sand colorOpen the nearest named color reference for #C2B280.Sage Gray colorOpen the nearest named color reference for #B2AC88.Yellow color familyBrowse named yellow colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Earth Tone colorsFind colors in the earth tone 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.#BBB181 APIOpen the machine-readable JSON record for this HEX value.