HEX atlas value

#E54D2E

#E54D2E is a warm red HEX color close to Cinnabar. According to Colors Encyclopedia, it converts to RGB 229, 77, 46, HSL 10, 78%, 54%, has luminance 0.2216, and belongs to the vibrant group.

red warm vibrant

#E54D2E Sample readable text

HEX #E54D2E

RGB rgb(229, 77, 46)

HSL hsl(10 78% 54%)

CMYK cmyk(0, 66, 80, 10)

Luminance 0.2216

Contrast Black 5.43:1White 3.87:1

CSS

--color-e54d2e: #E54D2E;
.background-e54d2e { background-color: #E54D2E; }
.text-e54d2e { color: #E54D2E; }

Luminance0.2216

Black text5.43:1AA Pass

White text3.87:1AA Fail

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":"#E54D2E","rgb":[229,77,46],"hsl":[10,78,54],"cmyk":[0,66,80,10],"luminance":0.2216,"contrast":{"black":5.43,"white":3.87}}

WCAG

{"AA":["#000000","#1A1A1A"],"AAA":[]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":5.43,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.87,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#2EC7E5","hex":"#2EC7E5","family":"cyan","bestTextColor":"#000000","contrastBlack":10.42,"contrastWhite":2.02,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#E5A82E","hex":"#E5A82E","family":"orange","bestTextColor":"#000000","contrastBlack":9.97,"contrastWhite":2.11,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#EF9280","hex":"#EF9280","family":"red","bestTextColor":"#000000","contrastBlack":9.09,"contrastWhite":2.31,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#A32C14","hex":"#A32C14","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.93,"contrastWhite":7.17,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"Neon Orange","hex":"#FF5F1F","family":"orange","bestTextColor":"#000000","contrastBlack":6.91,"contrastWhite":3.04,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]

AI context

{"semanticGroups":["warm red","vibrant","vibrant red","Cinnabar adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","high-attention visual states"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/e54d2e.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/cinnabar.json","https://www.colorsencyclopedia.com/api/colors/vermilion.json","https://www.colorsencyclopedia.com/api/colors/fire-opal.json"]}

Harmonies

{"complementary":"#2EC7E5","analogous":["#E52E6B","#E5A82E"],"triadic":["#2EE54D","#4D2EE5"],"tetradic":["#6BE52E","#2EC7E5","#A82EE5"],"splitComplementary":["#2EE5A8","#2E6BE5"],"monochromatic":["#EF9280","#E54D2E","#A32C14"]}

Variants

{"light":"#EF9280","dark":"#A32C14","saturated":"#FF3C14","desaturated":"#CB5E48","pastel":"#EBB3A8","neon":"#FF5E3D"}

Nearest named colors

[{"slug":"cinnabar","name":"Cinnabar","hex":"#E44D2E","distance":1},{"slug":"vermilion","name":"Vermilion","hex":"#E34234","distance":12.68857754044952},{"slug":"fire-opal","name":"Fire Opal","hex":"#E95C20","distance":20.904544960366874},{"slug":"poppy-red","name":"Poppy Red","hex":"#DC343B","distance":29.58039891549808},{"slug":"neon-orange","name":"Neon Orange","hex":"#FF5F1F","distance":35}]

HEX meaning and use

About #E54D2E

#E54D2E is classified as a warm red value with vibrant visual character. #E54D2E is visually closest to Cinnabar, a named red color with HEX #E44D2E.

The RGB channels are 229, 77, and 46, with red carrying the strongest channel weight. In HSL, the hue is 10deg with 78% saturation and 54% 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 0.2216, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 1.00, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text5.43:1AA Pass

White text3.87:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #E54D2E needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000005.43:1 · AA

White text#FFFFFF3.87:1 · Fail

Accessible Alternatives

#2EC7E5#000000 text · best 10.42:1#2EC7E5

#E5A82E#000000 text · best 9.97:1#E5A82E

#EF9280#000000 text · best 9.09:1#EF9280

#A32C14#FFFFFF text · best 7.17:1#A32C14

Neon Orange#000000 text · best 6.91:1#FF5F1F

Generated Palette

#E54D2E#E54D2E

#2EC7E5#2EC7E5

#E52E6B#E52E6B

#E5A82E#E5A82E

#EF9280#EF9280

#A32C14#A32C14

Color Harmonies

#2EC7E5#2EC7E5

#E52E6B#E52E6B

#E5A82E#E5A82E

#2EE54D#2EE54D

#4D2EE5#4D2EE5

Variants

#EF9280#EF9280

#A32C14#A32C14

#FF3C14#FF3C14

#CB5E48#CB5E48

#EBB3A8#EBB3A8

#FF5E3D#FF5E3D

Nearest Named Colors

Cinnabar#E44D2E

Vermilion#E34234

Fire Opal#E95C20

Poppy Red#DC343B

Neon Orange#FF5F1F

#E54D2E

CSS

Machine-Readable HEX Data (JSON)

About #E54D2E

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides