Colors Encyclopedia

HEX atlas value

#EF5A4D

#EF5A4D is a warm red HEX color close to Tomato. According to Colors Encyclopedia, it converts to RGB 239, 90, 77, HSL 5, 84%, 62%, has luminance 0.262, and belongs to the vibrant group.

redwarmvibrant
#EF5A4D Sample readable text
HEX #EF5A4D
RGB rgb(239, 90, 77)
HSL hsl(5 84% 62%)
CMYK cmyk(0, 62, 68, 6)
Luminance 0.262
Contrast Black 6.24:1White 3.37:1

CSS

--color-ef5a4d: #EF5A4D;
.background-ef5a4d { background-color: #EF5A4D; }
.text-ef5a4d { color: #EF5A4D; }

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
Luminance0.262
Black text6.24:1AA Pass
White text3.37:1AA 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":"#EF5A4D","rgb":[239,90,77],"hsl":[5,84,62],"cmyk":[0,62,68,6],"luminance":0.262,"contrast":{"black":6.24,"white":3.37}}
WCAG
{"AA":["#000000","#1A1A1A"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":6.24,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.37,"wcagAA":false,"wcagAAA":false}]
Accessible alternatives
[{"name":"#4DE2EF","hex":"#4DE2EF","family":"cyan","bestTextColor":"#000000","contrastBlack":13.44,"contrastWhite":1.56,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#F7A8A1","hex":"#F7A8A1","family":"red","bestTextColor":"#000000","contrastBlack":11.07,"contrastWhite":1.9,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#EFAC4D","hex":"#EFAC4D","family":"orange","bestTextColor":"#000000","contrastBlack":10.68,"contrastWhite":1.97,"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":"Burnt Sienna","hex":"#E97451","family":"red","bestTextColor":"#000000","contrastBlack":7.08,"contrastWhite":2.97,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]}]
AI context
{"semanticGroups":["warm red","vibrant","vibrant red","Tomato 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/ef5a4d.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/tomato.json","https://www.colorsencyclopedia.com/api/colors/tulip-red.json","https://www.colorsencyclopedia.com/api/colors/burnt-sienna.json"]}
Harmonies
{"complementary":"#4DE2EF","analogous":["#EF4D91","#EFAC4D"],"triadic":["#4DEF5A","#5A4DEF"],"tetradic":["#91EF4D","#4DE2EF","#AC4DEF"],"splitComplementary":["#4DEFAC","#4D91EF"],"monochromatic":["#F7A8A1","#EF5A4D","#CE2212"]}
Variants
{"light":"#F7A8A1","dark":"#CE2212","saturated":"#FF4D3D","desaturated":"#DA6C62","pastel":"#F5CBC7","neon":"#FF7366"}
Nearest named colors
[{"slug":"tomato","name":"Tomato","hex":"#FF6347","distance":19.313207915827967},{"slug":"tulip-red","name":"Tulip Red","hex":"#FF4D4D","distance":20.615528128088304},{"slug":"burnt-sienna","name":"Burnt Sienna","hex":"#E97451","distance":26.981475126464083},{"slug":"terracotta","name":"Terracotta","hex":"#E2725B","distance":30.675723300355934},{"slug":"cinnabar","name":"Cinnabar","hex":"#E44D2E","distance":35.369478367654786}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #EF5A4D

#EF5A4D is classified as a warm red value with vibrant visual character. #EF5A4D is visually closest to Tomato, a named red color with HEX #FF6347.

The RGB channels are 239, 90, and 77, with red carrying the strongest channel weight. In HSL, the hue is 5deg with 84% saturation and 62% 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 0.262, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 19.31, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text6.24:1AA Pass
White text3.37:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #EF5A4D needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000006.24:1 · AA
White text#FFFFFF3.37:1 · Fail

Accessible Alternatives

#4DE2EF#000000 text · best 13.44:1#4DE2EF
#F7A8A1#000000 text · best 11.07:1#F7A8A1
#EFAC4D#000000 text · best 10.68:1#EFAC4D
Tomato#000000 text · best 7.13:1#FF6347
Burnt Sienna#000000 text · best 7.08:1#E97451

Generated Palette

#EF5A4D#EF5A4D
#4DE2EF#4DE2EF
#EF4D91#EF4D91
#EFAC4D#EFAC4D
#F7A8A1#F7A8A1
#CE2212#CE2212

Color Harmonies

#4DE2EF#4DE2EF
#EF4D91#EF4D91
#EFAC4D#EFAC4D
#4DEF5A#4DEF5A
#5A4DEF#5A4DEF

Variants

#F7A8A1#F7A8A1
#CE2212#CE2212
#FF4D3D#FF4D3D
#DA6C62#DA6C62
#F5CBC7#F5CBC7
#FF7366#FF7366

Nearest Named Colors

Tomato#FF6347
Tulip Red#FF4D4D
Burnt Sienna#E97451
Terracotta#E2725B
Cinnabar#E44D2E

Related HEX Guides

Tomato colorOpen the nearest named color reference for #FF6347.Tulip Red colorOpen the nearest named color reference for #FF4D4D.Burnt Sienna colorOpen the nearest named color reference for #E97451.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.#EF5A4D APIOpen the machine-readable JSON record for this HEX value.