Colors Encyclopedia

HEX atlas value

#CB510B

#CB510B is a warm orange HEX color close to Burnt Orange. According to Colors Encyclopedia, it converts to RGB 203, 81, 11, HSL 22, 90%, 42%, has luminance 0.1861, and belongs to the vibrant group.

orangewarmvibrant
#CB510B Sample readable text
HEX #CB510B
RGB rgb(203, 81, 11)
HSL hsl(22 90% 42%)
CMYK cmyk(0, 60, 95, 20)
Luminance 0.1861
Contrast Black 4.72:1White 4.45:1

CSS

--color-cb510b: #CB510B;
.background-cb510b { background-color: #CB510B; }
.text-cb510b { color: #CB510B; }

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
Luminance0.1861
Black text4.72:1AA Pass
White text4.45:1AA Fail
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":"#CB510B","rgb":[203,81,11],"hsl":[22,90,42],"cmyk":[0,60,95,20],"luminance":0.1861,"contrast":{"black":4.72,"white":4.45}}
WCAG
{"AA":["#000000"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":4.72,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.45,"wcagAA":false,"wcagAAA":false}]
Accessible alternatives
[{"name":"#CBB20B","hex":"#CBB20B","family":"yellow","bestTextColor":"#000000","contrastBlack":9.91,"contrastWhite":2.12,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#742F06","hex":"#742F06","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.15,"contrastWhite":9.76,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#F5813D","hex":"#F5813D","family":"orange","bestTextColor":"#000000","contrastBlack":8.09,"contrastWhite":2.6,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#CB0B24","hex":"#CB0B24","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.61,"contrastWhite":5.81,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"Cinnamon","hex":"#D2691E","family":"orange","bestTextColor":"#000000","contrastBlack":5.78,"contrastWhite":3.63,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]
AI context
{"semanticGroups":["warm orange","vibrant","vibrant orange","Burnt Orange adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents"],"contrastSafeWith":["#000000"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/cb510b.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/burnt-orange.json","https://www.colorsencyclopedia.com/api/colors/mahogany.json","https://www.colorsencyclopedia.com/api/colors/rust.json"]}
Harmonies
{"complementary":"#0B85CB","analogous":["#CB0B24","#CBB20B"],"triadic":["#0BCB51","#510BCB"],"tetradic":["#24CB0B","#0B85CB","#B20BCB"],"splitComplementary":["#0BCBB2","#0B24CB"],"monochromatic":["#F5813D","#CB510B","#742F06"]}
Variants
{"light":"#F5813D","dark":"#742F06","saturated":"#D64F00","desaturated":"#B45822","pastel":"#EA9A6C","neon":"#FF5E00"}
Nearest named colors
[{"slug":"burnt-orange","name":"Burnt Orange","hex":"#CC5500","distance":11.74734012447073},{"slug":"mahogany","name":"Mahogany","hex":"#C04000","distance":23.043437243605826},{"slug":"rust","name":"Rust","hex":"#B7410E","distance":25.787593916455254},{"slug":"chocolate","name":"Chocolate","hex":"#D2691E","distance":31.400636936215164},{"slug":"cinnamon","name":"Cinnamon","hex":"#D2691E","distance":31.400636936215164}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #CB510B

#CB510B is classified as a warm orange value with vibrant visual character. #CB510B is visually closest to Burnt Orange, a named orange color with HEX #CC5500.

The RGB channels are 203, 81, and 11, with red carrying the strongest channel weight. In HSL, the hue is 22deg with 90% 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 0.1861, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 11.75, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text4.72:1AA Pass
White text4.45:1AA Fail

AA text options: #000000.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #CB510B needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.72:1 · AA
White text#FFFFFF4.45:1 · Fail

Accessible Alternatives

#CBB20B#000000 text · best 9.91:1#CBB20B
#742F06#FFFFFF text · best 9.76:1#742F06
#F5813D#000000 text · best 8.09:1#F5813D
#CB0B24#FFFFFF text · best 5.81:1#CB0B24
Cinnamon#000000 text · best 5.78:1#D2691E

Generated Palette

#CB510B#CB510B
#0B85CB#0B85CB
#CB0B24#CB0B24
#CBB20B#CBB20B
#F5813D#F5813D
#742F06#742F06

Color Harmonies

#0B85CB#0B85CB
#CB0B24#CB0B24
#CBB20B#CBB20B
#0BCB51#0BCB51
#510BCB#510BCB

Variants

#F5813D#F5813D
#742F06#742F06
#D64F00#D64F00
#B45822#B45822
#EA9A6C#EA9A6C
#FF5E00#FF5E00

Nearest Named Colors

Burnt Orange#CC5500
Mahogany#C04000
Rust#B7410E
Chocolate#D2691E
Cinnamon#D2691E

Related HEX Guides

Burnt Orange colorOpen the nearest named color reference for #CC5500.Mahogany colorOpen the nearest named color reference for #C04000.Rust colorOpen the nearest named color reference for #B7410E.Orange color familyBrowse named orange colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Vibrant colorsFind colors in the vibrant 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.#CB510B APIOpen the machine-readable JSON record for this HEX value.