Colors Encyclopedia

HEX atlas value

#E54A2E

#E54A2E is a warm red HEX color close to Cinnabar. According to Colors Encyclopedia, it converts to RGB 229, 74, 46, HSL 9, 78%, 54%, has luminance 0.2175, and belongs to the vibrant group.

redwarmvibrant
#E54A2E Sample readable text
HEX #E54A2E
RGB rgb(229, 74, 46)
HSL hsl(9 78% 54%)
CMYK cmyk(0, 68, 80, 10)
Luminance 0.2175
Contrast Black 5.35:1White 3.93:1

CSS

--color-e54a2e: #E54A2E;
.background-e54a2e { background-color: #E54A2E; }
.text-e54a2e { color: #E54A2E; }

Machine-readable data

Machine-Readable HEX Data (JSON)

Structured HEX color data for conversion, WCAG checks, CSS generation, automation, and AI ingestion.

AI-Ready Dataset v1.0.0
Luminance0.2175
Black text5.35:1AA Pass
White text3.93:1AA 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
Download JSON Open API
Structured sections
Color systems
{"hex":"#E54A2E","rgb":[229,74,46],"hsl":[9,78,54],"cmyk":[0,68,80,10],"luminance":0.2175,"contrast":{"black":5.35,"white":3.93}}
WCAG
{"AA":["#000000"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":5.35,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.93,"wcagAA":false,"wcagAAA":false}]
Accessible alternatives
[{"name":"#2ECAE5","hex":"#2ECAE5","family":"cyan","bestTextColor":"#000000","contrastBlack":10.7,"contrastWhite":1.96,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#E5A52E","hex":"#E5A52E","family":"orange","bestTextColor":"#000000","contrastBlack":9.75,"contrastWhite":2.15,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#EF9180","hex":"#EF9180","family":"red","bestTextColor":"#000000","contrastBlack":9.03,"contrastWhite":2.33,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#A32A14","hex":"#A32A14","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.9,"contrastWhite":7.25,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"Fire Opal","hex":"#E95C20","family":"orange","bestTextColor":"#000000","contrastBlack":6.02,"contrastWhite":3.49,"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"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/e54a2e.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":"#2ECAE5","analogous":["#E52E6E","#E5A52E"],"triadic":["#2EE54A","#4A2EE5"],"tetradic":["#6EE52E","#2ECAE5","#A52EE5"],"splitComplementary":["#2EE5A5","#2E6EE5"],"monochromatic":["#EF9180","#E54A2E","#A32A14"]}
Variants
{"light":"#EF9180","dark":"#A32A14","saturated":"#FF3814","desaturated":"#CB5C48","pastel":"#EBB2A8","neon":"#FF5A3D"}
Nearest named colors
[{"slug":"cinnabar","name":"Cinnabar","hex":"#E44D2E","distance":3.1622776601683795},{"slug":"vermilion","name":"Vermilion","hex":"#E34234","distance":10.198039027185569},{"slug":"fire-opal","name":"Fire Opal","hex":"#E95C20","distance":23.15167380558045},{"slug":"poppy-red","name":"Poppy Red","hex":"#DC343B","distance":27.09243436828813},{"slug":"persian-red","name":"Persian Red","hex":"#CC3333","distance":34.336569426778794}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #E54A2E

#E54A2E is classified as a warm red value with vibrant visual character. #E54A2E is visually closest to Cinnabar, a named red color with HEX #E44D2E.

The RGB channels are 229, 74, and 46, with red carrying the strongest channel weight. In HSL, the hue is 9deg 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 0.2175, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 3.16, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text5.35:1AA Pass
White text3.93:1AA Fail

AA text options: #000000.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #E54A2E needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000005.35:1 · AA
White text#FFFFFF3.93:1 · Fail

Accessible Alternatives

#2ECAE5#000000 text · best 10.7:1#2ECAE5
#E5A52E#000000 text · best 9.75:1#E5A52E
#EF9180#000000 text · best 9.03:1#EF9180
#A32A14#FFFFFF text · best 7.25:1#A32A14
Fire Opal#000000 text · best 6.02:1#E95C20

Generated Palette

#E54A2E#E54A2E
#2ECAE5#2ECAE5
#E52E6E#E52E6E
#E5A52E#E5A52E
#EF9180#EF9180
#A32A14#A32A14

Color Harmonies

#2ECAE5#2ECAE5
#E52E6E#E52E6E
#E5A52E#E5A52E
#2EE54A#2EE54A
#4A2EE5#4A2EE5

Variants

#EF9180#EF9180
#A32A14#A32A14
#FF3814#FF3814
#CB5C48#CB5C48
#EBB2A8#EBB2A8
#FF5A3D#FF5A3D

Nearest Named Colors

Cinnabar#E44D2E
Vermilion#E34234
Fire Opal#E95C20
Poppy Red#DC343B
Persian Red#CC3333

Related HEX Guides

Cinnabar colorOpen the nearest named color reference for #E44D2E.Vermilion colorOpen the nearest named color reference for #E34234.Fire Opal colorOpen the nearest named color reference for #E95C20.Red color familyBrowse named red colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Vibrant colorsFind colors in the vibrant group.Color palettesBrowse palette systems related to generated color combinations.Compare colorsCompare named colors near this HEX value.Accessible colorsBrowse WCAG-friendly named colors and safe text options.#E54A2E APIOpen the machine-readable JSON record for this HEX value.