Colors Encyclopedia

HEX atlas value

#8B0000

#8B0000 is a warm red HEX color close to Dark Red. According to Colors Encyclopedia, it converts to RGB 139, 0, 0, HSL 0, 100%, 27%, has luminance 0.0549, and belongs to the balanced group.

redwarmbalanced
#8B0000 Sample readable text
HEX #8B0000
RGB rgb(139, 0, 0)
HSL hsl(0 100% 27%)
CMYK cmyk(0, 100, 100, 45)
Luminance 0.0549
Contrast Black 2.1:1White 10.01:1

CSS

--color-8b0000: #8B0000;
.background-8b0000 { background-color: #8B0000; }
.text-8b0000 { color: #8B0000; }

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
Luminance0.0549
Black text2.1:1AA Fail
White text10.01:1AA 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":"#8B0000","rgb":[139,0,0],"hsl":[0,100,27],"cmyk":[0,100,100,45],"luminance":0.0549,"contrast":{"black":2.1,"white":10.01}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":2.1,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":10.01,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"#2E0000","hex":"#2E0000","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.12,"contrastWhite":18.82,"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":"#7B0F0F","hex":"#7B0F0F","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.92,"contrastWhite":10.95,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Maroon","hex":"#800000","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.92,"contrastWhite":10.95,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#8A0000","hex":"#8A0000","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.08,"contrastWhite":10.1,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["warm red","balanced","balanced red","Dark 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/8b0000.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/dark-red.json","https://www.colorsencyclopedia.com/api/colors/maroon.json","https://www.colorsencyclopedia.com/api/colors/crimson-red.json"]}
Harmonies
{"complementary":"#008A8A","analogous":["#8A0045","#8A4500"],"triadic":["#008A00","#00008A"],"tetradic":["#458A00","#008A8A","#45008A"],"splitComplementary":["#008A45","#00458A"],"monochromatic":["#E60000","#8B0000","#2E0000"]}
Variants
{"light":"#E60000","dark":"#2E0000","saturated":"#8A0000","desaturated":"#7B0F0F","pastel":"#ED1D1D","neon":"#B30000"}
Nearest named colors
[{"slug":"dark-red","name":"Dark Red","hex":"#8B0000","distance":0},{"slug":"maroon","name":"Maroon","hex":"#800000","distance":11},{"slug":"crimson-red","name":"Crimson Red","hex":"#990000","distance":14},{"slug":"barn-red","name":"Barn Red","hex":"#7C0A02","distance":18.138357147217054},{"slug":"cranberry","name":"Cranberry","hex":"#9F000F","distance":25}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #8B0000

#8B0000 is classified as a warm red value with balanced visual character. #8B0000 is visually closest to Dark Red, a named red color with HEX #8B0000.

The RGB channels are 139, 0, and 0, with red carrying the strongest channel weight. In HSL, the hue is 0deg with 100% saturation and 27% 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 0.0549, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 0.00, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text2.1:1AA Fail
White text10.01:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #8B0000 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.1:1 · Fail
White text#FFFFFF10.01:1 · AAA

Accessible Alternatives

#2E0000#FFFFFF text · best 18.82:1#2E0000
Barn Red#FFFFFF text · best 11.04:1#7C0A02
#7B0F0F#FFFFFF text · best 10.95:1#7B0F0F
Maroon#FFFFFF text · best 10.95:1#800000
#8A0000#FFFFFF text · best 10.1:1#8A0000

Generated Palette

Dark Red#8B0000
#008A8A#008A8A
#8A0045#8A0045
#8A4500#8A4500
Signal Red#E60000
#2E0000#2E0000

Color Harmonies

#008A8A#008A8A
#8A0045#8A0045
#8A4500#8A4500
#008A00#008A00
#00008A#00008A

Variants

Signal Red#E60000
#2E0000#2E0000
#8A0000#8A0000
#7B0F0F#7B0F0F
#ED1D1D#ED1D1D
#B30000#B30000

Nearest Named Colors

Dark Red#8B0000
Maroon#800000
Crimson Red#990000
Barn Red#7C0A02
Cranberry#9F000F

Related HEX Guides

Dark Red colorOpen the nearest named color reference for #8B0000.Maroon colorOpen the nearest named color reference for #800000.Crimson Red colorOpen the nearest named color reference for #990000.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.#8B0000 APIOpen the machine-readable JSON record for this HEX value.