Colors Encyclopedia

HEX atlas value

#881B11

#881B11 is a warm red HEX color close to Ruby Red. According to Colors Encyclopedia, it converts to RGB 136, 27, 17, HSL 5, 78%, 30%, has luminance 0.0606, and belongs to the balanced group.

redwarmbalanced
#881B11 Sample readable text
HEX #881B11
RGB rgb(136, 27, 17)
HSL hsl(5 78% 30%)
CMYK cmyk(0, 80, 88, 47)
Luminance 0.0606
Contrast Black 2.21:1White 9.49:1

CSS

--color-881b11: #881B11;
.background-881b11 { background-color: #881B11; }
.text-881b11 { color: #881B11; }

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
Luminance0.0606
Black text2.21:1AA Fail
White text9.49:1AA Pass
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":"#881B11","rgb":[136,27,17],"hsl":[5,78,30],"cmyk":[0,80,88,47],"luminance":0.0606,"contrast":{"black":2.21,"white":9.49}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":2.21,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":9.49,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"#360B07","hex":"#360B07","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.21,"contrastWhite":17.38,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Barn Red","hex":"#7C0A02","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.9,"contrastWhite":11.04,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#772922","hex":"#772922","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.12,"contrastWhite":9.89,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#881143","hex":"#881143","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":2.21,"contrastWhite":9.51,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Carmine","hex":"#960018","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.31,"contrastWhite":9.09,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["warm red","balanced","balanced red","Ruby Red adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-attention visual states"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/881b11.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/ruby-red.json","https://www.colorsencyclopedia.com/api/colors/barn-red.json","https://www.colorsencyclopedia.com/api/colors/brick-red.json"]}
Harmonies
{"complementary":"#117E88","analogous":["#881143","#885611"],"triadic":["#11881B","#1B1188"],"tetradic":["#438811","#117E88","#561188"],"splitComplementary":["#118856","#114388"],"monochromatic":["#DA2B1B","#881B11","#360B07"]}
Variants
{"light":"#DA2B1B","dark":"#360B07","saturated":"#990D00","desaturated":"#772922","pastel":"#D55044","neon":"#C21000"}
Nearest named colors
[{"slug":"ruby-red","name":"Ruby Red","hex":"#9B111E","distance":25.099800796022265},{"slug":"barn-red","name":"Barn Red","hex":"#7C0A02","distance":25.65151067676132},{"slug":"brick-red","name":"Brick Red","hex":"#8A3324","distance":30.675723300355934},{"slug":"burnt-umber","name":"Burnt Umber","hex":"#8A3324","distance":30.675723300355934},{"slug":"carmine","name":"Carmine","hex":"#960018","distance":31.20897306865447}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #881B11

#881B11 is classified as a warm red value with balanced visual character. #881B11 is visually closest to Ruby Red, a named red color with HEX #9B111E.

The RGB channels are 136, 27, and 17, with red carrying the strongest channel weight. In HSL, the hue is 5deg with 78% saturation and 30% lightness, so this page treats it as a high-saturation, dark 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-attention visual states. Its luminance is 0.0606, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 25.10, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text2.21:1AA Fail
White text9.49:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #881B11 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.21:1 · Fail
White text#FFFFFF9.49:1 · AAA

Accessible Alternatives

#360B07#FFFFFF text · best 17.38:1#360B07
Barn Red#FFFFFF text · best 11.04:1#7C0A02
#772922#FFFFFF text · best 9.89:1#772922
#881143#FFFFFF text · best 9.51:1#881143
Carmine#FFFFFF text · best 9.09:1#960018

Generated Palette

#881B11#881B11
#117E88#117E88
#881143#881143
#885611#885611
#DA2B1B#DA2B1B
#360B07#360B07

Color Harmonies

#117E88#117E88
#881143#881143
#885611#885611
#11881B#11881B
#1B1188#1B1188

Variants

#DA2B1B#DA2B1B
#360B07#360B07
#990D00#990D00
#772922#772922
#D55044#D55044
#C21000#C21000

Nearest Named Colors

Ruby Red#9B111E
Barn Red#7C0A02
Brick Red#8A3324
Burnt Umber#8A3324
Carmine#960018

Related HEX Guides

Ruby Red colorOpen the nearest named color reference for #9B111E.Barn Red colorOpen the nearest named color reference for #7C0A02.Brick Red colorOpen the nearest named color reference for #8A3324.Red color familyBrowse named red colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Balanced colorsFind colors in the balanced 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.#881B11 APIOpen the machine-readable JSON record for this HEX value.