HEX atlas value

#B23010

#B23010 is a warm red HEX color close to Rust. According to Colors Encyclopedia, it converts to RGB 178, 48, 16, HSL 12, 84%, 38%, has luminance 0.1162, and belongs to the vibrant group.

red warm vibrant

#B23010 Sample readable text

HEX #B23010

RGB rgb(178, 48, 16)

HSL hsl(12 84% 38%)

CMYK cmyk(0, 73, 91, 30)

Luminance 0.1162

Contrast Black 3.32:1White 6.32:1

CSS

--color-b23010: #B23010;
.background-b23010 { background-color: #B23010; }
.text-b23010 { color: #B23010; }

Luminance0.1162

Black text3.32:1AA Fail

White text6.32:1AA 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":"#B23010","rgb":[178,48,16],"hsl":[12,84,38],"cmyk":[0,73,91,30],"luminance":0.1162,"contrast":{"black":3.32,"white":6.32}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.32,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":6.32,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#5E1908","hex":"#5E1908","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.62,"contrastWhite":12.98,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Pompeian Red","hex":"#A42A04","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.91,"contrastWhite":7.21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"Brown","hex":"#A52A2A","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.96,"contrastWhite":7.09,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"#B21040","hex":"#B21040","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":3.04,"contrastWhite":6.9,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"#9D3D25","hex":"#9D3D25","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.13,"contrastWhite":6.71,"wcagAA":["#FFFFFF","#F5F5F5"],"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/b23010.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/rust.json","https://www.colorsencyclopedia.com/api/colors/pompeian-red.json","https://www.colorsencyclopedia.com/api/colors/firebrick.json"]}

Harmonies

{"complementary":"#1092B2","analogous":["#B21040","#B28110"],"triadic":["#10B230","#3010B2"],"tetradic":["#40B210","#1092B2","#8110B2"],"splitComplementary":["#10B281","#1040B2"],"monochromatic":["#ED5631","#B23010","#5E1908"]}

Variants

{"light":"#ED5631","dark":"#5E1908","saturated":"#C22700","desaturated":"#9D3D25","pastel":"#E27A60","neon":"#EB2F00"}

Nearest named colors

[{"slug":"rust","name":"Rust","hex":"#B7410E","distance":17.832554500127006},{"slug":"pompeian-red","name":"Pompeian Red","hex":"#A42A04","distance":19.390719429665317},{"slug":"firebrick","name":"Firebrick","hex":"#B22222","distance":22.80350850198276},{"slug":"mahogany","name":"Mahogany","hex":"#C04000","distance":26.60826939130014},{"slug":"brown","name":"Brown","hex":"#A52A2A","distance":29.68164415931166}]

HEX meaning and use

About #B23010

#B23010 is classified as a warm red value with vibrant visual character. #B23010 is visually closest to Rust, a named orange color with HEX #B7410E.

The RGB channels are 178, 48, and 16, with red carrying the strongest channel weight. In HSL, the hue is 12deg with 84% saturation and 38% 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 0.1162, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 17.83, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.32:1AA Fail

White text6.32:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #B23010 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.32:1 · Fail

White text#FFFFFF6.32:1 · AA

Accessible Alternatives

#5E1908#FFFFFF text · best 12.98:1#5E1908

Pompeian Red#FFFFFF text · best 7.21:1#A42A04

Brown#FFFFFF text · best 7.09:1#A52A2A

#B21040#FFFFFF text · best 6.9:1#B21040

#9D3D25#FFFFFF text · best 6.71:1#9D3D25

Generated Palette

#B23010#B23010

#1092B2#1092B2

#B21040#B21040

#B28110#B28110

#ED5631#ED5631

#5E1908#5E1908

Color Harmonies

#1092B2#1092B2

#B21040#B21040

#B28110#B28110

#10B230#10B230

#3010B2#3010B2

Variants

#ED5631#ED5631

#5E1908#5E1908

#C22700#C22700

#9D3D25#9D3D25

#E27A60#E27A60

#EB2F00#EB2F00

Nearest Named Colors

Rust#B7410E

Pompeian Red#A42A04

Firebrick#B22222

Mahogany#C04000

Brown#A52A2A

#B23010

CSS

Machine-Readable HEX Data (JSON)

About #B23010

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides