Colors Encyclopedia

HEX atlas value

#E3291C

#E3291C is a warm red HEX color close to Poppy Red. According to Colors Encyclopedia, it converts to RGB 227, 41, 28, HSL 4, 78%, 50%, has luminance 0.18, and belongs to the vibrant group.

redwarmvibrant
#E3291C Sample readable text
HEX #E3291C
RGB rgb(227, 41, 28)
HSL hsl(4 78% 50%)
CMYK cmyk(0, 82, 88, 11)
Luminance 0.18
Contrast Black 4.6:1White 4.57:1

CSS

--color-e3291c: #E3291C;
.background-e3291c { background-color: #E3291C; }
.text-e3291c { color: #E3291C; }

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
Luminance0.18
Black text4.6:1AA Pass
White text4.57:1AA 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
Download JSON Open API
Structured sections
Color systems
{"hex":"#E3291C","rgb":[227,41,28],"hsl":[4,78,50],"cmyk":[0,82,88,11],"luminance":0.18,"contrast":{"black":4.6,"white":4.57}}
WCAG
{"AA":["#000000","#FFFFFF"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":4.6,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.57,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#1CD6E3","hex":"#1CD6E3","family":"cyan","bestTextColor":"#000000","contrastBlack":11.78,"contrastWhite":1.78,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#911A12","hex":"#911A12","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.36,"contrastWhite":8.9,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#E38D1C","hex":"#E38D1C","family":"orange","bestTextColor":"#000000","contrastBlack":8.09,"contrastWhite":2.6,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#ED766E","hex":"#ED766E","family":"red","bestTextColor":"#000000","contrastBlack":7.42,"contrastWhite":2.83,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Scarlet","hex":"#FF2400","family":"red","bestTextColor":"#000000","contrastBlack":5.5,"contrastWhite":3.82,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]
AI context
{"semanticGroups":["warm red","vibrant","vibrant red","Poppy Red adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","high-attention visual states"],"contrastSafeWith":["#000000","#FFFFFF"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/e3291c.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/poppy-red.json","https://www.colorsencyclopedia.com/api/colors/persian-red.json","https://www.colorsencyclopedia.com/api/colors/vermilion.json"]}
Harmonies
{"complementary":"#1CD6E3","analogous":["#E31C72","#E38D1C"],"triadic":["#1CE329","#291CE3"],"tetradic":["#72E31C","#1CD6E3","#8D1CE3"],"splitComplementary":["#1CE38D","#1C72E3"],"monochromatic":["#ED766E","#E3291C","#911A12"]}
Variants
{"light":"#ED766E","dark":"#911A12","saturated":"#FF1100","desaturated":"#C74238","pastel":"#E79C97","neon":"#FF3729"}
Nearest named colors
[{"slug":"poppy-red","name":"Poppy Red","hex":"#DC343B","distance":33.63034344160047},{"slug":"persian-red","name":"Persian Red","hex":"#CC3333","distance":34.02939905434711},{"slug":"vermilion","name":"Vermilion","hex":"#E34234","distance":34.655446902326915},{"slug":"crimson","name":"Crimson","hex":"#DC143C","distance":38.91015291668744},{"slug":"scarlet","name":"Scarlet","hex":"#FF2400","distance":39.91240408695021}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #E3291C

#E3291C is classified as a warm red value with vibrant visual character. #E3291C is visually closest to Poppy Red, a named red color with HEX #DC343B.

The RGB channels are 227, 41, and 28, with red carrying the strongest channel weight. In HSL, the hue is 4deg with 78% saturation and 50% 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 0.18, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 33.63, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text4.6:1AA Pass
White text4.57:1AA Pass

AA text options: #000000, #FFFFFF.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #E3291C needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.6:1 · AA
White text#FFFFFF4.57:1 · AA

Accessible Alternatives

#1CD6E3#000000 text · best 11.78:1#1CD6E3
#911A12#FFFFFF text · best 8.9:1#911A12
#E38D1C#000000 text · best 8.09:1#E38D1C
#ED766E#000000 text · best 7.42:1#ED766E
Scarlet#000000 text · best 5.5:1#FF2400

Generated Palette

#E3291C#E3291C
#1CD6E3#1CD6E3
#E31C72#E31C72
#E38D1C#E38D1C
#ED766E#ED766E
#911A12#911A12

Color Harmonies

#1CD6E3#1CD6E3
#E31C72#E31C72
#E38D1C#E38D1C
#1CE329#1CE329
#291CE3#291CE3

Variants

#ED766E#ED766E
#911A12#911A12
#FF1100#FF1100
#C74238#C74238
#E79C97#E79C97
#FF3729#FF3729

Nearest Named Colors

Poppy Red#DC343B
Persian Red#CC3333
Vermilion#E34234
Crimson#DC143C
Scarlet#FF2400

Related HEX Guides

Poppy Red colorOpen the nearest named color reference for #DC343B.Persian Red colorOpen the nearest named color reference for #CC3333.Vermilion colorOpen the nearest named color reference for #E34234.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.#E3291C APIOpen the machine-readable JSON record for this HEX value.