Colors Encyclopedia

HEX atlas value

#A55109

#A55109 is a warm orange HEX color close to Rust. According to Colors Encyclopedia, it converts to RGB 165, 81, 9, HSL 28, 90%, 34%, has luminance 0.139, and belongs to the balanced group.

orangewarmbalanced
#A55109 Sample readable text
HEX #A55109
RGB rgb(165, 81, 9)
HSL hsl(28 90% 34%)
CMYK cmyk(0, 51, 95, 35)
Luminance 0.139
Contrast Black 3.78:1White 5.56:1

CSS

--color-a55109: #A55109;
.background-a55109 { background-color: #A55109; }
.text-a55109 { color: #A55109; }

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
Luminance0.139
Black text3.78:1AA Fail
White text5.56:1AA 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":"#A55109","rgb":[165,81,9],"hsl":[28,90,34],"cmyk":[0,51,95,35],"luminance":0.139,"contrast":{"black":3.78,"white":5.56}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":3.78,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.56,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#4E2604","hex":"#4E2604","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":1.6,"contrastWhite":13.11,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#A5090E","hex":"#A5090E","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.65,"contrastWhite":7.94,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#F37D16","hex":"#F37D16","family":"orange","bestTextColor":"#000000","contrastBlack":7.76,"contrastWhite":2.71,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#A5A009","hex":"#A5A009","family":"yellow","bestTextColor":"#000000","contrastBlack":7.63,"contrastWhite":2.75,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Pompeian Red","hex":"#A42A04","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.91,"contrastWhite":7.21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]}]
AI context
{"semanticGroups":["warm orange","balanced","balanced orange","Rust adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/a55109.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/rust.json","https://www.colorsencyclopedia.com/api/colors/saddle-brown.json","https://www.colorsencyclopedia.com/api/colors/mahogany.json"]}
Harmonies
{"complementary":"#095CA5","analogous":["#A5090E","#A5A009"],"triadic":["#09A551","#5109A5"],"tetradic":["#0EA509","#095CA5","#A009A5"],"splitComplementary":["#09A5A0","#090EA5"],"monochromatic":["#F37D16","#A55109","#4E2604"]}
Variants
{"light":"#F37D16","dark":"#4E2604","saturated":"#AD5100","desaturated":"#92531C","pastel":"#E59148","neon":"#D66400"}
Nearest named colors
[{"slug":"rust","name":"Rust","hex":"#B7410E","distance":24.596747752497688},{"slug":"saddle-brown","name":"Saddle Brown","hex":"#8B4513","distance":30.331501776206203},{"slug":"mahogany","name":"Mahogany","hex":"#C04000","distance":33.15116890850155},{"slug":"sienna","name":"Sienna","hex":"#A0522D","distance":36.359317925395686},{"slug":"pompeian-red","name":"Pompeian Red","hex":"#A42A04","distance":39.331920878594275}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #A55109

#A55109 is classified as a warm orange value with balanced visual character. #A55109 is visually closest to Rust, a named orange color with HEX #B7410E.

The RGB channels are 165, 81, and 9, with red carrying the strongest channel weight. In HSL, the hue is 28deg with 90% saturation and 34% 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, and CSS color tokens. Its luminance is 0.139, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 24.60, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.78:1AA Fail
White text5.56:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #A55109 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.78:1 · Fail
White text#FFFFFF5.56:1 · AA

Accessible Alternatives

#4E2604#FFFFFF text · best 13.11:1#4E2604
#A5090E#FFFFFF text · best 7.94:1#A5090E
#F37D16#000000 text · best 7.76:1#F37D16
#A5A009#000000 text · best 7.63:1#A5A009
Pompeian Red#FFFFFF text · best 7.21:1#A42A04

Generated Palette

#A55109#A55109
#095CA5#095CA5
#A5090E#A5090E
#A5A009#A5A009
#F37D16#F37D16
#4E2604#4E2604

Color Harmonies

#095CA5#095CA5
#A5090E#A5090E
#A5A009#A5A009
#09A551#09A551
#5109A5#5109A5

Variants

#F37D16#F37D16
#4E2604#4E2604
#AD5100#AD5100
#92531C#92531C
#E59148#E59148
#D66400#D66400

Nearest Named Colors

Rust#B7410E
Saddle Brown#8B4513
Mahogany#C04000
Sienna#A0522D
Pompeian Red#A42A04

Related HEX Guides

Rust colorOpen the nearest named color reference for #B7410E.Saddle Brown colorOpen the nearest named color reference for #8B4513.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.Balanced colorsFind colors in the balanced 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.#A55109 APIOpen the machine-readable JSON record for this HEX value.