Colors Encyclopedia

HEX atlas value

#C55011

#C55011 is a warm orange HEX color close to Burnt Orange. According to Colors Encyclopedia, it converts to RGB 197, 80, 17, HSL 21, 84%, 42%, has luminance 0.1765, and belongs to the vibrant group.

orangewarmvibrant
#C55011 Sample readable text
HEX #C55011
RGB rgb(197, 80, 17)
HSL hsl(21 84% 42%)
CMYK cmyk(0, 59, 91, 23)
Luminance 0.1765
Contrast Black 4.53:1White 4.64:1

CSS

--color-c55011: #C55011;
.background-c55011 { background-color: #C55011; }
.text-c55011 { color: #C55011; }

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
Luminance0.1765
Black text4.53:1AA Pass
White text4.64:1AA 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":"#C55011","rgb":[197,80,17],"hsl":[21,84,42],"cmyk":[0,59,91,23],"luminance":0.1765,"contrast":{"black":4.53,"white":4.64}}
WCAG
{"AA":["#000000","#FFFFFF"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":4.53,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.64,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#712E0A","hex":"#712E0A","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.1,"contrastWhite":10.01,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#C5AA11","hex":"#C5AA11","family":"yellow","bestTextColor":"#000000","contrastBlack":9.13,"contrastWhite":2.3,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#EF7F43","hex":"#EF7F43","family":"orange","bestTextColor":"#000000","contrastBlack":7.79,"contrastWhite":2.7,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#C5112C","hex":"#C5112C","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.49,"contrastWhite":6.02,"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","#FFFFFF"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/c55011.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/burnt-orange.json","https://www.colorsencyclopedia.com/api/colors/rust.json","https://www.colorsencyclopedia.com/api/colors/mahogany.json"]}
Harmonies
{"complementary":"#1186C5","analogous":["#C5112C","#C5AA11"],"triadic":["#11C550","#5011C5"],"tetradic":["#2CC511","#1186C5","#AA11C5"],"splitComplementary":["#11C5AA","#112CC5"],"monochromatic":["#EF7F43","#C55011","#712E0A"]}
Variants
{"light":"#EF7F43","dark":"#712E0A","saturated":"#D64B00","desaturated":"#AE5729","pastel":"#E59971","neon":"#FF5900"}
Nearest named colors
[{"slug":"burnt-orange","name":"Burnt Orange","hex":"#CC5500","distance":19.05255888325765},{"slug":"rust","name":"Rust","hex":"#B7410E","distance":20.73644135332772},{"slug":"mahogany","name":"Mahogany","hex":"#C04000","distance":23.874672772626646},{"slug":"chocolate","name":"Chocolate","hex":"#D2691E","distance":31.0322412983658},{"slug":"cinnamon","name":"Cinnamon","hex":"#D2691E","distance":31.0322412983658}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #C55011

#C55011 is classified as a warm orange value with vibrant visual character. #C55011 is visually closest to Burnt Orange, a named orange color with HEX #CC5500.

The RGB channels are 197, 80, and 17, with red carrying the strongest channel weight. In HSL, the hue is 21deg with 84% 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 0.1765, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 19.05, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text4.53:1AA Pass
White text4.64:1AA Pass

AA text options: #000000, #FFFFFF.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #C55011 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.53:1 · AA
White text#FFFFFF4.64:1 · AA

Accessible Alternatives

#712E0A#FFFFFF text · best 10.01:1#712E0A
#C5AA11#000000 text · best 9.13:1#C5AA11
#EF7F43#000000 text · best 7.79:1#EF7F43
#C5112C#FFFFFF text · best 6.02:1#C5112C
Cinnamon#000000 text · best 5.78:1#D2691E

Generated Palette

#C55011#C55011
#1186C5#1186C5
#C5112C#C5112C
#C5AA11#C5AA11
#EF7F43#EF7F43
#712E0A#712E0A

Color Harmonies

#1186C5#1186C5
#C5112C#C5112C
#C5AA11#C5AA11
#11C550#11C550
#5011C5#5011C5

Variants

#EF7F43#EF7F43
#712E0A#712E0A
#D64B00#D64B00
#AE5729#AE5729
#E59971#E59971
#FF5900#FF5900

Nearest Named Colors

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

Related HEX Guides

Burnt Orange colorOpen the nearest named color reference for #CC5500.Rust colorOpen the nearest named color reference for #B7410E.Mahogany colorOpen the nearest named color reference for #C04000.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.#C55011 APIOpen the machine-readable JSON record for this HEX value.