HEX atlas value

#B8100A

#B8100A is a warm red HEX color close to Venetian Red. According to Colors Encyclopedia, it converts to RGB 184, 16, 10, HSL 2, 90%, 38%, has luminance 0.1058, and belongs to the vibrant group.

red warm vibrant

#B8100A Sample readable text

HEX #B8100A

RGB rgb(184, 16, 10)

HSL hsl(2 90% 38%)

CMYK cmyk(0, 91, 95, 28)

Luminance 0.1058

Contrast Black 3.12:1White 6.74:1

CSS

--color-b8100a: #B8100A;
.background-b8100a { background-color: #B8100A; }
.text-b8100a { color: #B8100A; }

Luminance0.1058

Black text3.12:1AA Fail

White text6.74:1AA 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

Structured sections

Color systems

{"hex":"#B8100A","rgb":[184,16,10],"hsl":[2,90,38],"cmyk":[0,91,95,28],"luminance":0.1058,"contrast":{"black":3.12,"white":6.74}}

WCAG

{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.12,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":6.74,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#610805","hex":"#610805","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.55,"contrastWhite":13.58,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Cranberry","hex":"#9F000F","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.48,"contrastWhite":8.46,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#0AB2B8","hex":"#0AB2B8","family":"cyan","bestTextColor":"#000000","contrastBlack":8.07,"contrastWhite":2.6,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#A3231F","hex":"#A3231F","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.82,"contrastWhite":7.45,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"Anodized Red","hex":"#B00020","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.87,"contrastWhite":7.33,"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/b8100a.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/venetian-red.json","https://www.colorsencyclopedia.com/api/colors/traffic-red.json","https://www.colorsencyclopedia.com/api/colors/anodized-red.json"]}

Harmonies

{"complementary":"#0AB2B8","analogous":["#B80A5B","#B8670A"],"triadic":["#0AB810","#100AB8"],"tetradic":["#5BB80A","#0AB2B8","#670AB8"],"splitComplementary":["#0AB867","#0A5BB8"],"monochromatic":["#F4312A","#B8100A","#610805"]}

Variants

{"light":"#F4312A","dark":"#610805","saturated":"#C20600","desaturated":"#A3231F","pastel":"#E75F5A","neon":"#EB0800"}

Nearest named colors

[{"slug":"venetian-red","name":"Venetian Red","hex":"#C80815","distance":21},{"slug":"traffic-red","name":"Traffic Red","hex":"#CC0605","distance":22.9128784747792},{"slug":"anodized-red","name":"Anodized Red","hex":"#B00020","distance":28.35489375751565},{"slug":"tool-red","name":"Tool Red","hex":"#B11226","distance":28.930952282978865},{"slug":"cranberry","name":"Cranberry","hex":"#9F000F","distance":30.099833886584822}]

HEX meaning and use

About #B8100A

#B8100A is classified as a warm red value with vibrant visual character. #B8100A is visually closest to Venetian Red, a named red color with HEX #C80815.

The RGB channels are 184, 16, and 10, with red carrying the strongest channel weight. In HSL, the hue is 2deg 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 0.1058, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 21.00, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.12:1AA Fail

White text6.74:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #B8100A needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.12:1 · Fail

White text#FFFFFF6.74:1 · AA

Accessible Alternatives

#610805#FFFFFF text · best 13.58:1#610805

Cranberry#FFFFFF text · best 8.46:1#9F000F

#0AB2B8#000000 text · best 8.07:1#0AB2B8

#A3231F#FFFFFF text · best 7.45:1#A3231F

Anodized Red#FFFFFF text · best 7.33:1#B00020

Generated Palette

#B8100A#B8100A

#0AB2B8#0AB2B8

#B80A5B#B80A5B

#B8670A#B8670A

#F4312A#F4312A

#610805#610805

Color Harmonies

#0AB2B8#0AB2B8

#B80A5B#B80A5B

#B8670A#B8670A

#0AB810#0AB810

#100AB8#100AB8

Variants

#F4312A#F4312A

#610805#610805

#C20600#C20600

#A3231F#A3231F

#E75F5A#E75F5A

#EB0800#EB0800

Nearest Named Colors

Venetian Red#C80815

Traffic Red#CC0605

Anodized Red#B00020

Tool Red#B11226

Cranberry#9F000F

#B8100A

CSS

Machine-Readable HEX Data (JSON)

About #B8100A

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides