Colors Encyclopedia

HEX atlas value

#A12321

#A12321 is a warm red HEX color close to Brown. According to Colors Encyclopedia, it converts to RGB 161, 35, 33, HSL 1, 66%, 38%, has luminance 0.0889, and belongs to the balanced group.

redwarmbalanced
#A12321 Sample readable text
HEX #A12321
RGB rgb(161, 35, 33)
HSL hsl(1 66% 38%)
CMYK cmyk(0, 78, 80, 37)
Luminance 0.0889
Contrast Black 2.78:1White 7.56:1

CSS

--color-a12321: #A12321;
.background-a12321 { background-color: #A12321; }
.text-a12321 { color: #A12321; }

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
Luminance0.0889
Black text2.78:1AA Fail
White text7.56:1AA 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":"#A12321","rgb":[161,35,33],"hsl":[1,66,38],"cmyk":[0,78,80,37],"luminance":0.0889,"contrast":{"black":2.78,"white":7.56}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":2.78,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":7.56,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"#551211","hex":"#551211","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.48,"contrastWhite":14.19,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Ruby Red","hex":"#9B111E","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.49,"contrastWhite":8.43,"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":"#8C3836","hex":"#8C3836","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.73,"contrastWhite":7.68,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#A1215F","hex":"#A1215F","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":2.9,"contrastWhite":7.25,"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/a12321.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/ruby-red.json"]}
Harmonies
{"complementary":"#219FA1","analogous":["#A1215F","#A16321"],"triadic":["#21A123","#2321A1"],"tetradic":["#5FA121","#219FA1","#6321A1"],"splitComplementary":["#21A163","#215FA1"],"monochromatic":["#D94745","#A12321","#551211"]}
Variants
{"light":"#D94745","dark":"#551211","saturated":"#B60E0C","desaturated":"#8C3836","pastel":"#D17271","neon":"#EB0400"}
Nearest named colors
[{"slug":"brown","name":"Brown","hex":"#A52A2A","distance":12.083045973594572},{"slug":"firebrick","name":"Firebrick","hex":"#B22222","distance":17.05872210923198},{"slug":"ruby-red","name":"Ruby Red","hex":"#9B111E","distance":19.209372712298546},{"slug":"tool-red","name":"Tool Red","hex":"#B11226","distance":23.874672772626646},{"slug":"brick-red","name":"Brick Red","hex":"#8A3324","distance":28.178005607210743}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #A12321

#A12321 is classified as a warm red value with balanced visual character. #A12321 is visually closest to Brown, a named red color with HEX #A52A2A.

The RGB channels are 161, 35, and 33, with red carrying the strongest channel weight. In HSL, the hue is 1deg with 66% saturation and 38% 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 0.0889, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 12.08, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text2.78:1AA Fail
White text7.56:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #A12321 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.78:1 · Fail
White text#FFFFFF7.56:1 · AAA

Accessible Alternatives

#551211#FFFFFF text · best 14.19:1#551211
Ruby Red#FFFFFF text · best 8.43:1#9B111E
Burnt Umber#FFFFFF text · best 8.14:1#8A3324
#8C3836#FFFFFF text · best 7.68:1#8C3836
#A1215F#FFFFFF text · best 7.25:1#A1215F

Generated Palette

#A12321#A12321
#219FA1#219FA1
#A1215F#A1215F
#A16321#A16321
#D94745#D94745
#551211#551211

Color Harmonies

#219FA1#219FA1
#A1215F#A1215F
#A16321#A16321
#21A123#21A123
#2321A1#2321A1

Variants

#D94745#D94745
#551211#551211
#B60E0C#B60E0C
#8C3836#8C3836
#D17271#D17271
#EB0400#EB0400

Nearest Named Colors

Brown#A52A2A
Firebrick#B22222
Ruby Red#9B111E
Tool Red#B11226
Brick Red#8A3324

Related HEX Guides

Brown colorOpen the nearest named color reference for #A52A2A.Firebrick colorOpen the nearest named color reference for #B22222.Ruby Red colorOpen the nearest named color reference for #9B111E.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.#A12321 APIOpen the machine-readable JSON record for this HEX value.