HEX atlas value

#CB0B0B

#CB0B0B is a warm red HEX color nearest Traffic Red. RGB 203, 11, 11, HSL 0° 90% 42%, luminance 0.1296; view contrast and conversions.

red warm vibrant

#CB0B0B Sample readable text

HEX #CB0B0B

RGB rgb(203, 11, 11)

HSL hsl(0 90% 42%)

CMYK cmyk(0, 95, 95, 20)

Luminance 0.1296

Contrast Black 3.59:1White 5.85:1

CSS

--color-cb0b0b: #CB0B0B;
.background-cb0b0b { background-color: #CB0B0B; }
.text-cb0b0b { color: #CB0B0B; }

HEX meaning and use

About #CB0B0B

#CB0B0B is classified as a warm red value with vibrant visual character. #CB0B0B is visually closest to Traffic Red, a named red color with HEX #CC0605.

The RGB channels are 203, 11, and 11, with red carrying the strongest channel weight. In HSL, the hue is 0deg with 90% saturation and 42% lightness, so this page treats it as a high-saturation, mid-lightness atlas color rather than a generic swatch.

Practical uses for this HEX value include color conversion, WCAG contrast checks, CSS color tokens, and high-energy accents. Its luminance is 0.1296, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 7.87, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.59:1AA Fail

White text5.85:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #CB0B0B needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.59:1 · Fail

White text#FFFFFF5.85:1 · AA

Accessible Alternatives

#740606#740606 · #FFFFFF text · best 11.85:1 #0BCBCB#0BCBCB · #000000 text · best 10.42:1 #B42222#B42222 · #FFFFFF text · best 6.58:1 Venetian Red#C80815 · #FFFFFF text · best 6:1 Traffic Red#CC0605 · #FFFFFF text · best 5.84:1

Generated Palette

#CB0B0B#CB0B0B

#0BCBCB#0BCBCB

#CB0B6B#CB0B6B

#CB6B0B#CB6B0B

#F53D3D#F53D3D

#740606#740606

Color Harmonies

#0BCBCB#0BCBCB

#CB0B6B#CB0B6B

#CB6B0B#CB6B0B

#0BCB0B#0BCB0B

#0B0BCB#0B0BCB

Variants

#F53D3D#F53D3D

#740606#740606

#D60000#D60000

#B42222#B42222

#EA6C6C#EA6C6C

Red#FF0000

Nearest Named Colors

Traffic Red#CC0605

Venetian Red#C80815

Signal Red#E60000

Cadmium Red#E30022

Cherry Red#D2042D

Luminance0.1296

Black text3.59:1AA Fail

White text5.85:1AA 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":"#CB0B0B","rgb":[203,11,11],"hsl":[0,90,42],"cmyk":[0,95,95,20],"luminance":0.1296,"contrast":{"black":3.59,"white":5.85}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.59,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.85,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#740606","hex":"#740606","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.77,"contrastWhite":11.85,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#0BCBCB","hex":"#0BCBCB","family":"cyan","bestTextColor":"#000000","contrastBlack":10.42,"contrastWhite":2.02,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#B42222","hex":"#B42222","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.19,"contrastWhite":6.58,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"Venetian Red","hex":"#C80815","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.5,"contrastWhite":6,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"Traffic Red","hex":"#CC0605","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.6,"contrastWhite":5.84,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]}]

AI context

{"semanticGroups":["warm red","vibrant","vibrant red","Traffic 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/cb0b0b.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/traffic-red.json","https://www.colorsencyclopedia.com/api/colors/venetian-red.json","https://www.colorsencyclopedia.com/api/colors/signal-red.json"]}

Harmonies

{"complementary":"#0BCBCB","analogous":["#CB0B6B","#CB6B0B"],"triadic":["#0BCB0B","#0B0BCB"],"tetradic":["#6BCB0B","#0BCBCB","#6B0BCB"],"splitComplementary":["#0BCB6B","#0B6BCB"],"monochromatic":["#F53D3D","#CB0B0B","#740606"]}

Variants

{"light":"#F53D3D","dark":"#740606","saturated":"#D60000","desaturated":"#B42222","pastel":"#EA6C6C","neon":"#FF0000"}

Nearest named colors

[{"slug":"traffic-red","name":"Traffic Red","hex":"#CC0605","distance":7.874007874011811},{"slug":"venetian-red","name":"Venetian Red","hex":"#C80815","distance":10.862780491200215},{"slug":"signal-red","name":"Signal Red","hex":"#E60000","distance":31.160872901765767},{"slug":"cadmium-red","name":"Cadmium Red","hex":"#E30022","distance":35.014282800023196},{"slug":"cherry-red","name":"Cherry Red","hex":"#D2042D","distance":35.41186241925155}]

#CB0B0B

CSS

About #CB0B0B

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Machine-Readable HEX Data (JSON)

Related HEX Guides