HEX atlas value

#CB240B

#CB240B is a warm red HEX color close to Venetian Red. According to Colors Encyclopedia, it converts to RGB 203, 36, 11, HSL 8, 90%, 42%, has luminance 0.1398, and belongs to the vibrant group.

red warm vibrant

#CB240B Sample readable text

HEX #CB240B

RGB rgb(203, 36, 11)

HSL hsl(8 90% 42%)

CMYK cmyk(0, 82, 95, 20)

Luminance 0.1398

Contrast Black 3.8:1White 5.53:1

CSS

--color-cb240b: #CB240B;
.background-cb240b { background-color: #CB240B; }
.text-cb240b { color: #CB240B; }

Luminance0.1398

Black text3.8:1AA Fail

White text5.53:1AA 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":"#CB240B","rgb":[203,36,11],"hsl":[8,90,42],"cmyk":[0,82,95,20],"luminance":0.1398,"contrast":{"black":3.8,"white":5.53}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.8,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.53,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#741506","hex":"#741506","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.85,"contrastWhite":11.34,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#0BB2CB","hex":"#0BB2CB","family":"cyan","bestTextColor":"#000000","contrastBlack":8.24,"contrastWhite":2.55,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#CB850B","hex":"#CB850B","family":"orange","bestTextColor":"#000000","contrastBlack":6.9,"contrastWhite":3.04,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]},{"name":"Firebrick","hex":"#B22222","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.14,"contrastWhite":6.68,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"#F5563D","hex":"#F5563D","family":"red","bestTextColor":"#000000","contrastBlack":6.28,"contrastWhite":3.34,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]

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/cb240b.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/mahogany.json"]}

Harmonies

{"complementary":"#0BB2CB","analogous":["#CB0B51","#CB850B"],"triadic":["#0BCB24","#240BCB"],"tetradic":["#51CB0B","#0BB2CB","#850BCB"],"splitComplementary":["#0BCB85","#0B51CB"],"monochromatic":["#F5563D","#CB240B","#741506"]}

Variants

{"light":"#F5563D","dark":"#741506","saturated":"#D61D00","desaturated":"#B43622","pastel":"#EA7D6C","neon":"#FF2200"}

Nearest named colors

[{"slug":"venetian-red","name":"Venetian Red","hex":"#C80815","distance":29.88310559496787},{"slug":"traffic-red","name":"Traffic Red","hex":"#CC0605","distance":30.610455730027933},{"slug":"mahogany","name":"Mahogany","hex":"#C04000","distance":32.03123475609393},{"slug":"firebrick","name":"Firebrick","hex":"#B22222","distance":34.02939905434711},{"slug":"rust","name":"Rust","hex":"#B7410E","distance":35.35533905932738}]

HEX meaning and use

About #CB240B

#CB240B is classified as a warm red value with vibrant visual character. #CB240B is visually closest to Venetian Red, a named red color with HEX #C80815.

The RGB channels are 203, 36, and 11, with red carrying the strongest channel weight. In HSL, the hue is 8deg with 90% saturation and 42% 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 0.1398, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 29.88, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.8:1AA Fail

White text5.53:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #CB240B needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.8:1 · Fail

White text#FFFFFF5.53:1 · AA

Accessible Alternatives

#741506#FFFFFF text · best 11.34:1#741506

#0BB2CB#000000 text · best 8.24:1#0BB2CB

#CB850B#000000 text · best 6.9:1#CB850B

Firebrick#FFFFFF text · best 6.68:1#B22222

#F5563D#000000 text · best 6.28:1#F5563D

Generated Palette

#CB240B#CB240B

#0BB2CB#0BB2CB

#CB0B51#CB0B51

#CB850B#CB850B

#F5563D#F5563D

#741506#741506

Color Harmonies

#0BB2CB#0BB2CB

#CB0B51#CB0B51

#CB850B#CB850B

#0BCB24#0BCB24

#240BCB#240BCB

Variants

#F5563D#F5563D

#741506#741506

#D61D00#D61D00

#B43622#B43622

#EA7D6C#EA7D6C

#FF2200#FF2200

Nearest Named Colors

Venetian Red#C80815

Traffic Red#CC0605

Mahogany#C04000

Firebrick#B22222

Rust#B7410E

#CB240B

CSS

Machine-Readable HEX Data (JSON)

About #CB240B

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides