Colors Encyclopedia

HEX atlas value

#911808

#911808 is a warm red HEX color close to Ruby Red. According to Colors Encyclopedia, it converts to RGB 145, 24, 8, HSL 7, 90%, 30%, has luminance 0.0669, and belongs to the balanced group.

redwarmbalanced
#911808 Sample readable text
HEX #911808
RGB rgb(145, 24, 8)
HSL hsl(7 90% 30%)
CMYK cmyk(0, 83, 94, 43)
Luminance 0.0669
Contrast Black 2.34:1White 8.98:1

CSS

--color-911808: #911808;
.background-911808 { background-color: #911808; }
.text-911808 { color: #911808; }

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
Luminance0.0669
Black text2.34:1AA Fail
White text8.98:1AA 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":"#911808","rgb":[145,24,8],"hsl":[7,90,30],"cmyk":[0,83,94,43],"luminance":0.0669,"contrast":{"black":2.34,"white":8.98}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":2.34,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":8.98,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"#3A0903","hex":"#3A0903","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.22,"contrastWhite":17.21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Barn Red","hex":"#7C0A02","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.9,"contrastWhite":11.04,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Dark Red","hex":"#8B0000","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.1,"contrastWhite":10.01,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#812518","hex":"#812518","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.21,"contrastWhite":9.49,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#91083C","hex":"#91083C","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":2.3,"contrastWhite":9.11,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["warm red","balanced","balanced red","Ruby Red adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-attention visual states"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/911808.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/ruby-red.json","https://www.colorsencyclopedia.com/api/colors/barn-red.json","https://www.colorsencyclopedia.com/api/colors/dark-red.json"]}
Harmonies
{"complementary":"#088191","analogous":["#91083C","#915D08"],"triadic":["#089118","#180891"],"tetradic":["#3C9108","#088191","#5D0891"],"splitComplementary":["#08915D","#083C91"],"monochromatic":["#E9260C","#911808","#3A0903"]}
Variants
{"light":"#E9260C","dark":"#3A0903","saturated":"#991200","desaturated":"#812518","pastel":"#E24A36","neon":"#C21700"}
Nearest named colors
[{"slug":"ruby-red","name":"Ruby Red","hex":"#9B111E","distance":25.15949125081825},{"slug":"barn-red","name":"Barn Red","hex":"#7C0A02","distance":25.942243542145693},{"slug":"dark-red","name":"Dark Red","hex":"#8B0000","distance":26},{"slug":"pompeian-red","name":"Pompeian Red","hex":"#A42A04","distance":26.476404589747453},{"slug":"crimson-red","name":"Crimson Red","hex":"#990000","distance":26.5329983228432}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #911808

#911808 is classified as a warm red value with balanced visual character. #911808 is visually closest to Ruby Red, a named red color with HEX #9B111E.

The RGB channels are 145, 24, and 8, with red carrying the strongest channel weight. In HSL, the hue is 7deg with 90% saturation and 30% lightness, so this page treats it as a high-saturation, dark 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-attention visual states. Its luminance is 0.0669, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 25.16, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text2.34:1AA Fail
White text8.98:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #911808 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.34:1 · Fail
White text#FFFFFF8.98:1 · AAA

Accessible Alternatives

#3A0903#FFFFFF text · best 17.21:1#3A0903
Barn Red#FFFFFF text · best 11.04:1#7C0A02
Dark Red#FFFFFF text · best 10.01:1#8B0000
#812518#FFFFFF text · best 9.49:1#812518
#91083C#FFFFFF text · best 9.11:1#91083C

Generated Palette

#911808#911808
#088191#088191
#91083C#91083C
#915D08#915D08
#E9260C#E9260C
#3A0903#3A0903

Color Harmonies

#088191#088191
#91083C#91083C
#915D08#915D08
#089118#089118
#180891#180891

Variants

#E9260C#E9260C
#3A0903#3A0903
#991200#991200
#812518#812518
#E24A36#E24A36
#C21700#C21700

Nearest Named Colors

Ruby Red#9B111E
Barn Red#7C0A02
Dark Red#8B0000
Pompeian Red#A42A04
Crimson Red#990000

Related HEX Guides

Ruby Red colorOpen the nearest named color reference for #9B111E.Barn Red colorOpen the nearest named color reference for #7C0A02.Dark Red colorOpen the nearest named color reference for #8B0000.Red color familyBrowse named red 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.#911808 APIOpen the machine-readable JSON record for this HEX value.