Colors Encyclopedia

HEX atlas value

#AB312B

#AB312B is a warm red HEX color close to Brown. According to Colors Encyclopedia, it converts to RGB 171, 49, 43, HSL 3, 60%, 42%, has luminance 0.1103, and belongs to the balanced group.

redwarmbalanced
#AB312B Sample readable text
HEX #AB312B
RGB rgb(171, 49, 43)
HSL hsl(3 60% 42%)
CMYK cmyk(0, 71, 75, 33)
Luminance 0.1103
Contrast Black 3.21:1White 6.55:1

CSS

--color-ab312b: #AB312B;
.background-ab312b { background-color: #AB312B; }
.text-ab312b { color: #AB312B; }

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
Luminance0.1103
Black text3.21:1AA Fail
White text6.55:1AA 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":"#AB312B","rgb":[171,49,43],"hsl":[3,60,42],"cmyk":[0,71,75,33],"luminance":0.1103,"contrast":{"black":3.21,"white":6.55}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":3.21,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":6.55,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#621C18","hex":"#621C18","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.7,"contrastWhite":12.37,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Burnt Umber","hex":"#8A3324","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.58,"contrastWhite":8.14,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Brown","hex":"#A52A2A","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.96,"contrastWhite":7.09,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"#2BA5AB","hex":"#2BA5AB","family":"cyan","bestTextColor":"#000000","contrastBlack":7.07,"contrastWhite":2.97,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Tool Red","hex":"#B11226","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.98,"contrastWhite":7.04,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]}]
AI context
{"semanticGroups":["warm red","balanced","balanced red","Brown adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-attention visual states"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/ab312b.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/brown.json","https://www.colorsencyclopedia.com/api/colors/firebrick.json","https://www.colorsencyclopedia.com/api/colors/tool-red.json"]}
Harmonies
{"complementary":"#2BA5AB","analogous":["#AB2B65","#AB722B"],"triadic":["#2BAB31","#312BAB"],"tetradic":["#65AB2B","#2BA5AB","#722BAB"],"splitComplementary":["#2BAB72","#2B65AB"],"monochromatic":["#D6625C","#AB312B","#621C18"]}
Variants
{"light":"#D6625C","dark":"#621C18","saturated":"#C31C13","desaturated":"#944642","pastel":"#D18985","neon":"#FF0D00"}
Nearest named colors
[{"slug":"brown","name":"Brown","hex":"#A52A2A","distance":9.273618495495704},{"slug":"firebrick","name":"Firebrick","hex":"#B22222","distance":18.841443681416774},{"slug":"tool-red","name":"Tool Red","hex":"#B11226","distance":31.96873472629156},{"slug":"brick-red","name":"Brick Red","hex":"#8A3324","distance":33.793490497431605},{"slug":"burnt-umber","name":"Burnt Umber","hex":"#8A3324","distance":33.793490497431605}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #AB312B

#AB312B is classified as a warm red value with balanced visual character. #AB312B is visually closest to Brown, a named red color with HEX #A52A2A.

The RGB channels are 171, 49, and 43, with red carrying the strongest channel weight. In HSL, the hue is 3deg with 60% saturation and 42% lightness, so this page treats it as a moderate-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-attention visual states. Its luminance is 0.1103, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 9.27, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.21:1AA Fail
White text6.55:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #AB312B needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.21:1 · Fail
White text#FFFFFF6.55:1 · AA

Accessible Alternatives

#621C18#FFFFFF text · best 12.37:1#621C18
Burnt Umber#FFFFFF text · best 8.14:1#8A3324
Brown#FFFFFF text · best 7.09:1#A52A2A
#2BA5AB#000000 text · best 7.07:1#2BA5AB
Tool Red#FFFFFF text · best 7.04:1#B11226

Generated Palette

#AB312B#AB312B
#2BA5AB#2BA5AB
#AB2B65#AB2B65
#AB722B#AB722B
#D6625C#D6625C
#621C18#621C18

Color Harmonies

#2BA5AB#2BA5AB
#AB2B65#AB2B65
#AB722B#AB722B
#2BAB31#2BAB31
#312BAB#312BAB

Variants

#D6625C#D6625C
#621C18#621C18
#C31C13#C31C13
#944642#944642
#D18985#D18985
#FF0D00#FF0D00

Nearest Named Colors

Brown#A52A2A
Firebrick#B22222
Tool Red#B11226
Brick Red#8A3324
Burnt Umber#8A3324

Related HEX Guides

Brown colorOpen the nearest named color reference for #A52A2A.Firebrick colorOpen the nearest named color reference for #B22222.Tool Red colorOpen the nearest named color reference for #B11226.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.#AB312B APIOpen the machine-readable JSON record for this HEX value.