HEX atlas value

#B8381E

#B8381E is a warm red HEX color close to Rust. According to Colors Encyclopedia, it converts to RGB 184, 56, 30, HSL 10, 72%, 42%, has luminance 0.1311, and belongs to the vibrant group.

red warm vibrant

#B8381E Sample readable text

HEX #B8381E

RGB rgb(184, 56, 30)

HSL hsl(10 72% 42%)

CMYK cmyk(0, 70, 84, 28)

Luminance 0.1311

Contrast Black 3.62:1White 5.8:1

CSS

--color-b8381e: #B8381E;
.background-b8381e { background-color: #B8381E; }
.text-b8381e { color: #B8381E; }

Luminance0.1311

Black text3.62:1AA Fail

White text5.8:1AA 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

Structured sections

Color systems

{"hex":"#B8381E","rgb":[184,56,30],"hsl":[10,72,42],"cmyk":[0,70,84,28],"luminance":0.1311,"contrast":{"black":3.62,"white":5.8}}

WCAG

{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.62,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.8,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#692011","hex":"#692011","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.82,"contrastWhite":11.56,"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":"#1E9FB8","hex":"#1E9FB8","family":"cyan","bestTextColor":"#000000","contrastBlack":6.71,"contrastWhite":3.13,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]},{"name":"Firebrick","hex":"#B22222","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.14,"contrastWhite":6.68,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"#B8851E","hex":"#B8851E","family":"orange","bestTextColor":"#000000","contrastBlack":6.41,"contrastWhite":3.28,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]

AI context

{"semanticGroups":["warm red","vibrant","vibrant red","Rust adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","high-attention visual states"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/b8381e.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/rust.json","https://www.colorsencyclopedia.com/api/colors/firebrick.json","https://www.colorsencyclopedia.com/api/colors/brown.json"]}

Harmonies

{"complementary":"#1E9FB8","analogous":["#B81E51","#B8851E"],"triadic":["#1EB838","#381EB8"],"tetradic":["#51B81E","#1E9FB8","#851EB8"],"splitComplementary":["#1EB885","#1E51B8"],"monochromatic":["#E26850","#B8381E","#692011"]}

Variants

{"light":"#E26850","dark":"#692011","saturated":"#D02806","desaturated":"#A14736","pastel":"#DB8B7B","neon":"#FF2B00"}

Nearest named colors

[{"slug":"rust","name":"Rust","hex":"#B7410E","distance":18.384776310850235},{"slug":"firebrick","name":"Firebrick","hex":"#B22222","distance":23.15167380558045},{"slug":"brown","name":"Brown","hex":"#A52A2A","distance":26.476404589747453},{"slug":"persian-red","name":"Persian Red","hex":"#CC3333","distance":29.427877939124322},{"slug":"mahogany","name":"Mahogany","hex":"#C04000","distance":32.0624390837628}]

HEX meaning and use

About #B8381E

#B8381E is classified as a warm red value with vibrant visual character. #B8381E is visually closest to Rust, a named orange color with HEX #B7410E.

The RGB channels are 184, 56, and 30, with red carrying the strongest channel weight. In HSL, the hue is 10deg with 72% saturation and 42% lightness, so this page treats it as a high-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-energy accents. Its luminance is 0.1311, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 18.38, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.62:1AA Fail

White text5.8:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #B8381E needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.62:1 · Fail

White text#FFFFFF5.8:1 · AA

Accessible Alternatives

#692011#FFFFFF text · best 11.56:1#692011

Brown#FFFFFF text · best 7.09:1#A52A2A

#1E9FB8#000000 text · best 6.71:1#1E9FB8

Firebrick#FFFFFF text · best 6.68:1#B22222

#B8851E#000000 text · best 6.41:1#B8851E

Generated Palette

#B8381E#B8381E

#1E9FB8#1E9FB8

#B81E51#B81E51

#B8851E#B8851E

#E26850#E26850

#692011#692011

Color Harmonies

#1E9FB8#1E9FB8

#B81E51#B81E51

#B8851E#B8851E

#1EB838#1EB838

#381EB8#381EB8

Variants

#E26850#E26850

#692011#692011

#D02806#D02806

#A14736#A14736

#DB8B7B#DB8B7B

#FF2B00#FF2B00

Nearest Named Colors

Rust#B7410E

Firebrick#B22222

Brown#A52A2A

Persian Red#CC3333

Mahogany#C04000

#B8381E

CSS

Machine-Readable HEX Data (JSON)

About #B8381E

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides