Colors Encyclopedia

HEX atlas value

#90291D

#90291D is a warm red HEX color close to Brick Red. According to Colors Encyclopedia, it converts to RGB 144, 41, 29, HSL 6, 66%, 34%, has luminance 0.076, and belongs to the balanced group.

redwarmbalanced
#90291D Sample readable text
HEX #90291D
RGB rgb(144, 41, 29)
HSL hsl(6 66% 34%)
CMYK cmyk(0, 72, 80, 44)
Luminance 0.076
Contrast Black 2.52:1White 8.33:1

CSS

--color-90291d: #90291D;
.background-90291d { background-color: #90291D; }
.text-90291d { color: #90291D; }

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
Luminance0.076
Black text2.52:1AA Fail
White text8.33:1AA 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":"#90291D","rgb":[144,41,29],"hsl":[6,66,34],"cmyk":[0,72,80,44],"luminance":0.076,"contrast":{"black":2.52,"white":8.33}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":2.52,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":8.33,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"#44130E","hex":"#44130E","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.35,"contrastWhite":15.6,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#901D4B","hex":"#901D4B","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":2.46,"contrastWhite":8.52,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#7D3831","hex":"#7D3831","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.48,"contrastWhite":8.46,"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"]}]
AI context
{"semanticGroups":["warm red","balanced","balanced red","Brick 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/90291d.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/brick-red.json","https://www.colorsencyclopedia.com/api/colors/burnt-umber.json","https://www.colorsencyclopedia.com/api/colors/brown.json"]}
Harmonies
{"complementary":"#1D8490","analogous":["#901D4B","#90621D"],"triadic":["#1D9029","#291D90"],"tetradic":["#4B901D","#1D8490","#621D90"],"splitComplementary":["#1D9062","#1D4B90"],"monochromatic":["#D54434","#90291D","#44130E"]}
Variants
{"light":"#D54434","dark":"#44130E","saturated":"#A31A0A","desaturated":"#7D3831","pastel":"#CC6C61","neon":"#D61500"}
Nearest named colors
[{"slug":"brick-red","name":"Brick Red","hex":"#8A3324","distance":13.601470508735444},{"slug":"burnt-umber","name":"Burnt Umber","hex":"#8A3324","distance":13.601470508735444},{"slug":"brown","name":"Brown","hex":"#A52A2A","distance":24.71841418861655},{"slug":"ruby-red","name":"Ruby Red","hex":"#9B111E","distance":26.419689627245813},{"slug":"saddle-brown","name":"Saddle Brown","hex":"#8B4513","distance":30.14962686336267}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #90291D

#90291D is classified as a warm red value with balanced visual character. #90291D is visually closest to Brick Red, a named red color with HEX #8A3324.

The RGB channels are 144, 41, and 29, with red carrying the strongest channel weight. In HSL, the hue is 6deg with 66% saturation and 34% 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 0.076, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 13.60, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text2.52:1AA Fail
White text8.33:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #90291D needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.52:1 · Fail
White text#FFFFFF8.33:1 · AAA

Accessible Alternatives

#44130E#FFFFFF text · best 15.6:1#44130E
#901D4B#FFFFFF text · best 8.52:1#901D4B
#7D3831#FFFFFF text · best 8.46:1#7D3831
Ruby Red#FFFFFF text · best 8.43:1#9B111E
Burnt Umber#FFFFFF text · best 8.14:1#8A3324

Generated Palette

#90291D#90291D
#1D8490#1D8490
#901D4B#901D4B
#90621D#90621D
#D54434#D54434
#44130E#44130E

Color Harmonies

#1D8490#1D8490
#901D4B#901D4B
#90621D#90621D
#1D9029#1D9029
#291D90#291D90

Variants

#D54434#D54434
#44130E#44130E
#A31A0A#A31A0A
#7D3831#7D3831
#CC6C61#CC6C61
#D61500#D61500

Nearest Named Colors

Brick Red#8A3324
Burnt Umber#8A3324
Brown#A52A2A
Ruby Red#9B111E
Saddle Brown#8B4513

Related HEX Guides

Brick Red colorOpen the nearest named color reference for #8A3324.Burnt Umber colorOpen the nearest named color reference for #8A3324.Brown colorOpen the nearest named color reference for #A52A2A.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.#90291D APIOpen the machine-readable JSON record for this HEX value.