HEX atlas value

#C52911

#C52911 is a warm red HEX color close to Firebrick. According to Colors Encyclopedia, it converts to RGB 197, 41, 17, HSL 8, 84%, 42%, has luminance 0.135, and belongs to the vibrant group.

red warm vibrant

#C52911 Sample readable text

HEX #C52911

RGB rgb(197, 41, 17)

HSL hsl(8 84% 42%)

CMYK cmyk(0, 79, 91, 23)

Luminance 0.135

Contrast Black 3.7:1White 5.68:1

CSS

--color-c52911: #C52911;
.background-c52911 { background-color: #C52911; }
.text-c52911 { color: #C52911; }

Luminance0.135

Black text3.7:1AA Fail

White text5.68:1AA 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":"#C52911","rgb":[197,41,17],"hsl":[8,84,42],"cmyk":[0,79,91,23],"luminance":0.135,"contrast":{"black":3.7,"white":5.68}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.7,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.68,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#71180A","hex":"#71180A","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.84,"contrastWhite":11.43,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#11ADC5","hex":"#11ADC5","family":"cyan","bestTextColor":"#000000","contrastBlack":7.81,"contrastWhite":2.69,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Pompeian Red","hex":"#A42A04","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.91,"contrastWhite":7.21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"Firebrick","hex":"#B22222","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.14,"contrastWhite":6.68,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"#C58311","hex":"#C58311","family":"orange","bestTextColor":"#000000","contrastBlack":6.63,"contrastWhite":3.17,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]

AI context

{"semanticGroups":["warm red","vibrant","vibrant red","Firebrick 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/c52911.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/firebrick.json","https://www.colorsencyclopedia.com/api/colors/rust.json","https://www.colorsencyclopedia.com/api/colors/mahogany.json"]}

Harmonies

{"complementary":"#11ADC5","analogous":["#C51153","#C58311"],"triadic":["#11C529","#2911C5"],"tetradic":["#53C511","#11ADC5","#8311C5"],"splitComplementary":["#11C583","#1153C5"],"monochromatic":["#EF5A43","#C52911","#71180A"]}

Variants

{"light":"#EF5A43","dark":"#71180A","saturated":"#D61D00","desaturated":"#AE3A29","pastel":"#E58071","neon":"#FF2200"}

Nearest named colors

[{"slug":"firebrick","name":"Firebrick","hex":"#B22222","distance":26.43860813280457},{"slug":"rust","name":"Rust","hex":"#B7410E","distance":27.94637722496424},{"slug":"mahogany","name":"Mahogany","hex":"#C04000","distance":29.03446228191595},{"slug":"venetian-red","name":"Venetian Red","hex":"#C80815","distance":33.37663853655727},{"slug":"pompeian-red","name":"Pompeian Red","hex":"#A42A04","distance":35.482389998420345}]

HEX meaning and use

About #C52911

#C52911 is classified as a warm red value with vibrant visual character. #C52911 is visually closest to Firebrick, a named red color with HEX #B22222.

The RGB channels are 197, 41, and 17, with red carrying the strongest channel weight. In HSL, the hue is 8deg with 84% 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 0.135, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 26.44, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.7:1AA Fail

White text5.68:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #C52911 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.7:1 · Fail

White text#FFFFFF5.68:1 · AA

Accessible Alternatives

#71180A#FFFFFF text · best 11.43:1#71180A

#11ADC5#000000 text · best 7.81:1#11ADC5

Pompeian Red#FFFFFF text · best 7.21:1#A42A04

Firebrick#FFFFFF text · best 6.68:1#B22222

#C58311#000000 text · best 6.63:1#C58311

Generated Palette

#C52911#C52911

#11ADC5#11ADC5

#C51153#C51153

#C58311#C58311

#EF5A43#EF5A43

#71180A#71180A

Color Harmonies

#11ADC5#11ADC5

#C51153#C51153

#C58311#C58311

#11C529#11C529

#2911C5#2911C5

Variants

#EF5A43#EF5A43

#71180A#71180A

#D61D00#D61D00

#AE3A29#AE3A29

#E58071#E58071

#FF2200#FF2200

Nearest Named Colors

Firebrick#B22222

Rust#B7410E

Mahogany#C04000

Venetian Red#C80815

Pompeian Red#A42A04

#C52911

CSS

Machine-Readable HEX Data (JSON)

About #C52911

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides