Colors Encyclopedia

HEX atlas value

#B8180A

#B8180A is a warm red HEX color close to Venetian Red. According to Colors Encyclopedia, it converts to RGB 184, 24, 10, HSL 5, 90%, 38%, has luminance 0.1087, and belongs to the vibrant group.

redwarmvibrant
#B8180A Sample readable text
HEX #B8180A
RGB rgb(184, 24, 10)
HSL hsl(5 90% 38%)
CMYK cmyk(0, 87, 95, 28)
Luminance 0.1087
Contrast Black 3.17:1White 6.62:1

CSS

--color-b8180a: #B8180A;
.background-b8180a { background-color: #B8180A; }
.text-b8180a { color: #B8180A; }

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
Luminance0.1087
Black text3.17:1AA Fail
White text6.62:1AA 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":"#B8180A","rgb":[184,24,10],"hsl":[5,90,38],"cmyk":[0,87,95,28],"luminance":0.1087,"contrast":{"black":3.17,"white":6.62}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":3.17,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":6.62,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#610D05","hex":"#610D05","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.57,"contrastWhite":13.39,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#0AAAB8","hex":"#0AAAB8","family":"cyan","bestTextColor":"#000000","contrastBlack":7.45,"contrastWhite":2.82,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#A32A1F","hex":"#A32A1F","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.91,"contrastWhite":7.22,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"Pompeian Red","hex":"#A42A04","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.91,"contrastWhite":7.21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"Tool Red","hex":"#B11226","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.98,"contrastWhite":7.04,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]}]
AI context
{"semanticGroups":["warm red","vibrant","vibrant red","Venetian Red adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","high-attention visual states"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/b8180a.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/venetian-red.json","https://www.colorsencyclopedia.com/api/colors/firebrick.json","https://www.colorsencyclopedia.com/api/colors/traffic-red.json"]}
Harmonies
{"complementary":"#0AAAB8","analogous":["#B80A52","#B86F0A"],"triadic":["#0AB818","#180AB8"],"tetradic":["#52B80A","#0AAAB8","#6F0AB8"],"splitComplementary":["#0AB86F","#0A52B8"],"monochromatic":["#F43B2A","#B8180A","#610D05"]}
Variants
{"light":"#F43B2A","dark":"#610D05","saturated":"#C21000","desaturated":"#A32A1F","pastel":"#E7665A","neon":"#EB1400"}
Nearest named colors
[{"slug":"venetian-red","name":"Venetian Red","hex":"#C80815","distance":25.15949125081825},{"slug":"firebrick","name":"Firebrick","hex":"#B22222","distance":26.68332812825267},{"slug":"traffic-red","name":"Traffic Red","hex":"#CC0605","distance":27.367864366808018},{"slug":"pompeian-red","name":"Pompeian Red","hex":"#A42A04","distance":27.568097504180443},{"slug":"tool-red","name":"Tool Red","hex":"#B11226","distance":29.478805945967352}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #B8180A

#B8180A is classified as a warm red value with vibrant visual character. #B8180A is visually closest to Venetian Red, a named red color with HEX #C80815.

The RGB channels are 184, 24, and 10, with red carrying the strongest channel weight. In HSL, the hue is 5deg with 90% 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 0.1087, 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 text3.17:1AA Fail
White text6.62:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #B8180A needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.17:1 · Fail
White text#FFFFFF6.62:1 · AA

Accessible Alternatives

#610D05#FFFFFF text · best 13.39:1#610D05
#0AAAB8#000000 text · best 7.45:1#0AAAB8
#A32A1F#FFFFFF text · best 7.22:1#A32A1F
Pompeian Red#FFFFFF text · best 7.21:1#A42A04
Tool Red#FFFFFF text · best 7.04:1#B11226

Generated Palette

#B8180A#B8180A
#0AAAB8#0AAAB8
#B80A52#B80A52
#B86F0A#B86F0A
#F43B2A#F43B2A
#610D05#610D05

Color Harmonies

#0AAAB8#0AAAB8
#B80A52#B80A52
#B86F0A#B86F0A
#0AB818#0AB818
#180AB8#180AB8

Variants

#F43B2A#F43B2A
#610D05#610D05
#C21000#C21000
#A32A1F#A32A1F
#E7665A#E7665A
#EB1400#EB1400

Nearest Named Colors

Venetian Red#C80815
Firebrick#B22222
Traffic Red#CC0605
Pompeian Red#A42A04
Tool Red#B11226

Related HEX Guides

Venetian Red colorOpen the nearest named color reference for #C80815.Firebrick colorOpen the nearest named color reference for #B22222.Traffic Red colorOpen the nearest named color reference for #CC0605.Red color familyBrowse named red 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.#B8180A APIOpen the machine-readable JSON record for this HEX value.