Colors Encyclopedia

HEX atlas value

#A53131

#A53131 is a warm red HEX color close to Brown. According to Colors Encyclopedia, it converts to RGB 165, 49, 49, HSL 0, 54%, 42%, has luminance 0.1042, and belongs to the balanced group.

redwarmbalanced
#A53131 Sample readable text
HEX #A53131
RGB rgb(165, 49, 49)
HSL hsl(0 54% 42%)
CMYK cmyk(0, 70, 70, 35)
Luminance 0.1042
Contrast Black 3.08:1White 6.81:1

CSS

--color-a53131: #A53131;
.background-a53131 { background-color: #A53131; }
.text-a53131 { color: #A53131; }

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
Luminance0.1042
Black text3.08:1AA Fail
White text6.81:1AA 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":"#A53131","rgb":[165,49,49],"hsl":[0,54,42],"cmyk":[0,70,70,35],"luminance":0.1042,"contrast":{"black":3.08,"white":6.81}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":3.08,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":6.81,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#5E1C1C","hex":"#5E1C1C","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.66,"contrastWhite":12.67,"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":"#31A5A5","hex":"#31A5A5","family":"cyan","bestTextColor":"#000000","contrastBlack":7.06,"contrastWhite":2.98,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Firebrick","hex":"#B22222","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.14,"contrastWhite":6.68,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]}]
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/a53131.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/brick-red.json"]}
Harmonies
{"complementary":"#31A5A5","analogous":["#A5316B","#A56B31"],"triadic":["#31A531","#3131A5"],"tetradic":["#6BA531","#31A5A5","#6B31A5"],"splitComplementary":["#31A56B","#316BA5"],"monochromatic":["#D06262","#A53131","#5E1C1C"]}
Variants
{"light":"#D06262","dark":"#5E1C1C","saturated":"#BC1A1A","desaturated":"#8D4949","pastel":"#CC8A8A","neon":"#FF0000"}
Nearest named colors
[{"slug":"brown","name":"Brown","hex":"#A52A2A","distance":9.899494936611665},{"slug":"firebrick","name":"Firebrick","hex":"#B22222","distance":24.879710609249457},{"slug":"brick-red","name":"Brick Red","hex":"#8A3324","distance":30.033314835362415},{"slug":"burnt-umber","name":"Burnt Umber","hex":"#8A3324","distance":30.033314835362415},{"slug":"sienna","name":"Sienna","hex":"#A0522D","distance":33.61547262794322}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #A53131

#A53131 is classified as a warm red value with balanced visual character. #A53131 is visually closest to Brown, a named red color with HEX #A52A2A.

The RGB channels are 165, 49, and 49, with red carrying the strongest channel weight. In HSL, the hue is 0deg with 54% 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 0.1042, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 9.90, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.08:1AA Fail
White text6.81:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #A53131 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.08:1 · Fail
White text#FFFFFF6.81:1 · AA

Accessible Alternatives

#5E1C1C#FFFFFF text · best 12.67:1#5E1C1C
Burnt Umber#FFFFFF text · best 8.14:1#8A3324
Brown#FFFFFF text · best 7.09:1#A52A2A
#31A5A5#000000 text · best 7.06:1#31A5A5
Firebrick#FFFFFF text · best 6.68:1#B22222

Generated Palette

#A53131#A53131
#31A5A5#31A5A5
#A5316B#A5316B
#A56B31#A56B31
#D06262#D06262
#5E1C1C#5E1C1C

Color Harmonies

#31A5A5#31A5A5
#A5316B#A5316B
#A56B31#A56B31
#31A531#31A531
#3131A5#3131A5

Variants

#D06262#D06262
#5E1C1C#5E1C1C
#BC1A1A#BC1A1A
#8D4949#8D4949
#CC8A8A#CC8A8A
Red#FF0000

Nearest Named Colors

Brown#A52A2A
Firebrick#B22222
Brick Red#8A3324
Burnt Umber#8A3324
Sienna#A0522D

Related HEX Guides

Brown colorOpen the nearest named color reference for #A52A2A.Firebrick colorOpen the nearest named color reference for #B22222.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.#A53131 APIOpen the machine-readable JSON record for this HEX value.