Colors Encyclopedia

HEX atlas value

#E75140

#E75140 is a warm red HEX color close to Cinnabar. According to Colors Encyclopedia, it converts to RGB 231, 81, 64, HSL 6, 78%, 58%, has luminance 0.2324, and belongs to the vibrant group.

redwarmvibrant
#E75140 Sample readable text
HEX #E75140
RGB rgb(231, 81, 64)
HSL hsl(6 78% 58%)
CMYK cmyk(0, 65, 72, 9)
Luminance 0.2324
Contrast Black 5.65:1White 3.72:1

CSS

--color-e75140: #E75140;
.background-e75140 { background-color: #E75140; }
.text-e75140 { color: #E75140; }

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
Luminance0.2324
Black text5.65:1AA Pass
White text3.72:1AA 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":"#E75140","rgb":[231,81,64],"hsl":[6,78,58],"cmyk":[0,65,72,9],"luminance":0.2324,"contrast":{"black":5.65,"white":3.72}}
WCAG
{"AA":["#000000","#1A1A1A"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":5.65,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.72,"wcagAA":false,"wcagAAA":false}]
Accessible alternatives
[{"name":"#40D7E7","hex":"#40D7E7","family":"cyan","bestTextColor":"#000000","contrastBlack":12.09,"contrastWhite":1.74,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#F29C92","hex":"#F29C92","family":"red","bestTextColor":"#000000","contrastBlack":9.95,"contrastWhite":2.11,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#E7A540","hex":"#E7A540","family":"orange","bestTextColor":"#000000","contrastBlack":9.85,"contrastWhite":2.13,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Tomato","hex":"#FF6347","family":"red","bestTextColor":"#000000","contrastBlack":7.13,"contrastWhite":2.95,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Tulip Red","hex":"#FF4D4D","family":"red","bestTextColor":"#000000","contrastBlack":6.42,"contrastWhite":3.27,"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/e75140.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/tulip-red.json"]}
Harmonies
{"complementary":"#40D7E7","analogous":["#E74083","#E7A540"],"triadic":["#40E751","#5140E7"],"tetradic":["#83E740","#40D7E7","#A540E7"],"splitComplementary":["#40E7A5","#4083E7"],"monochromatic":["#F29C92","#E75140","#B62616"]}
Variants
{"light":"#F29C92","dark":"#B62616","saturated":"#FF3E29","desaturated":"#D06458","pastel":"#EFBEB8","neon":"#FF6352"}
Nearest named colors
[{"slug":"cinnabar","name":"Cinnabar","hex":"#E44D2E","distance":18.681541692269406},{"slug":"vermilion","name":"Vermilion","hex":"#E34234","distance":19.621416870348583},{"slug":"tulip-red","name":"Tulip Red","hex":"#FF4D4D","distance":27.586228448267445},{"slug":"tomato","name":"Tomato","hex":"#FF6347","distance":30.805843601498726},{"slug":"poppy-red","name":"Poppy Red","hex":"#DC343B","distance":31.416556144810016}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #E75140

#E75140 is classified as a warm red value with vibrant visual character. #E75140 is visually closest to Cinnabar, a named red color with HEX #E44D2E.

The RGB channels are 231, 81, and 64, with red carrying the strongest channel weight. In HSL, the hue is 6deg with 78% saturation and 58% 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 0.2324, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 18.68, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text5.65:1AA Pass
White text3.72:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #E75140 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000005.65:1 · AA
White text#FFFFFF3.72:1 · Fail

Accessible Alternatives

#40D7E7#000000 text · best 12.09:1#40D7E7
#F29C92#000000 text · best 9.95:1#F29C92
#E7A540#000000 text · best 9.85:1#E7A540
Tomato#000000 text · best 7.13:1#FF6347
Tulip Red#000000 text · best 6.42:1#FF4D4D

Generated Palette

#E75140#E75140
#40D7E7#40D7E7
#E74083#E74083
#E7A540#E7A540
#F29C92#F29C92
#B62616#B62616

Color Harmonies

#40D7E7#40D7E7
#E74083#E74083
#E7A540#E7A540
#40E751#40E751
#5140E7#5140E7

Variants

#F29C92#F29C92
#B62616#B62616
#FF3E29#FF3E29
#D06458#D06458
#EFBEB8#EFBEB8
#FF6352#FF6352

Nearest Named Colors

Cinnabar#E44D2E
Vermilion#E34234
Tulip Red#FF4D4D
Tomato#FF6347
Poppy Red#DC343B

Related HEX Guides

Cinnabar colorOpen the nearest named color reference for #E44D2E.Vermilion colorOpen the nearest named color reference for #E34234.Tulip Red colorOpen the nearest named color reference for #FF4D4D.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.#E75140 APIOpen the machine-readable JSON record for this HEX value.