HEX atlas value

#A7531B

#A7531B is a warm orange HEX color close to Sienna. According to Colors Encyclopedia, it converts to RGB 167, 83, 27, HSL 24, 72%, 38%, has luminance 0.1448, and belongs to the vibrant group.

orange warm vibrant

#A7531B Sample readable text

HEX #A7531B

RGB rgb(167, 83, 27)

HSL hsl(24 72% 38%)

CMYK cmyk(0, 50, 84, 35)

Luminance 0.1448

Contrast Black 3.9:1White 5.39:1

CSS

--color-a7531b: #A7531B;
.background-a7531b { background-color: #A7531B; }
.text-a7531b { color: #A7531B; }

Luminance0.1448

Black text3.9:1AA Fail

White text5.39:1AA 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":"#A7531B","rgb":[167,83,27],"hsl":[24,72,38],"cmyk":[0,50,84,35],"luminance":0.1448,"contrast":{"black":3.9,"white":5.39}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.9,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.39,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#582C0E","hex":"#582C0E","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":1.78,"contrastWhite":11.78,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#A71B29","hex":"#A71B29","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.83,"contrastWhite":7.42,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"#E07F3E","hex":"#E07F3E","family":"orange","bestTextColor":"#000000","contrastBlack":7.27,"contrastWhite":2.89,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#A7991B","hex":"#A7991B","family":"yellow","bestTextColor":"#000000","contrastBlack":7.22,"contrastWhite":2.91,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Saddle Brown","hex":"#8B4513","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.96,"contrastWhite":7.1,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]}]

AI context

{"semanticGroups":["warm orange","vibrant","vibrant orange","Sienna adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/a7531b.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/sienna.json","https://www.colorsencyclopedia.com/api/colors/rust.json","https://www.colorsencyclopedia.com/api/colors/saddle-brown.json"]}

Harmonies

{"complementary":"#1B6FA7","analogous":["#A71B29","#A7991B"],"triadic":["#1BA753","#531BA7"],"tetradic":["#29A71B","#1B6FA7","#991BA7"],"splitComplementary":["#1BA799","#1B29A7"],"monochromatic":["#E07F3E","#A7531B","#582C0E"]}

Variants

{"light":"#E07F3E","dark":"#582C0E","saturated":"#BC4F06","desaturated":"#915730","pastel":"#D6966B","neon":"#EB5E00"}

Nearest named colors

[{"slug":"sienna","name":"Sienna","hex":"#A0522D","distance":19.339079605813716},{"slug":"rust","name":"Rust","hex":"#B7410E","distance":27.367864366808018},{"slug":"saddle-brown","name":"Saddle Brown","hex":"#8B4513","distance":32.31098884280702},{"slug":"cedar","name":"Cedar","hex":"#8B5A2B","distance":33},{"slug":"red-clay","name":"Red Clay","hex":"#B45A3C","distance":36.15245496505044}]

HEX meaning and use

About #A7531B

#A7531B is classified as a warm orange value with vibrant visual character. #A7531B is visually closest to Sienna, a named orange color with HEX #A0522D.

The RGB channels are 167, 83, and 27, with red carrying the strongest channel weight. In HSL, the hue is 24deg with 72% 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 0.1448, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 19.34, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.9:1AA Fail

White text5.39:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #A7531B needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.9:1 · Fail

White text#FFFFFF5.39:1 · AA

Accessible Alternatives

#582C0E#FFFFFF text · best 11.78:1#582C0E

#A71B29#FFFFFF text · best 7.42:1#A71B29

#E07F3E#000000 text · best 7.27:1#E07F3E

#A7991B#000000 text · best 7.22:1#A7991B

Saddle Brown#FFFFFF text · best 7.1:1#8B4513

Generated Palette

#A7531B#A7531B

#1B6FA7#1B6FA7

#A71B29#A71B29

#A7991B#A7991B

#E07F3E#E07F3E

#582C0E#582C0E

Color Harmonies

#1B6FA7#1B6FA7

#A71B29#A71B29

#A7991B#A7991B

#1BA753#1BA753

#531BA7#531BA7

Variants

#E07F3E#E07F3E

#582C0E#582C0E

#BC4F06#BC4F06

#915730#915730

#D6966B#D6966B

#EB5E00#EB5E00

Nearest Named Colors

Sienna#A0522D

Rust#B7410E

Saddle Brown#8B4513

Cedar#8B5A2B

Red Clay#B45A3C

#A7531B

CSS

Machine-Readable HEX Data (JSON)

About #A7531B

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides