HEX atlas value

#EF5D4D

#EF5D4D is a warm red HEX color close to Tomato. According to Colors Encyclopedia, it converts to RGB 239, 93, 77, HSL 6, 84%, 62%, has luminance 0.2672, and belongs to the vibrant group.

red warm vibrant

#EF5D4D Sample readable text

HEX #EF5D4D

RGB rgb(239, 93, 77)

HSL hsl(6 84% 62%)

CMYK cmyk(0, 61, 68, 6)

Luminance 0.2672

Contrast Black 6.34:1White 3.31:1

CSS

--color-ef5d4d: #EF5D4D;
.background-ef5d4d { background-color: #EF5D4D; }
.text-ef5d4d { color: #EF5D4D; }

Luminance0.2672

Black text6.34:1AA Pass

White text3.31:1AA 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":"#EF5D4D","rgb":[239,93,77],"hsl":[6,84,62],"cmyk":[0,61,68,6],"luminance":0.2672,"contrast":{"black":6.34,"white":3.31}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":6.34,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.31,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#4DDFEF","hex":"#4DDFEF","family":"cyan","bestTextColor":"#000000","contrastBlack":13.12,"contrastWhite":1.6,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#F7AAA1","hex":"#F7AAA1","family":"red","bestTextColor":"#000000","contrastBlack":11.22,"contrastWhite":1.87,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#EFAE4D","hex":"#EFAE4D","family":"orange","bestTextColor":"#000000","contrastBlack":10.83,"contrastWhite":1.94,"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/ef5d4d.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":"#4DDFEF","analogous":["#EF4D8E","#EFAE4D"],"triadic":["#4DEF5D","#5D4DEF"],"tetradic":["#8EEF4D","#4DDFEF","#AE4DEF"],"splitComplementary":["#4DEFAE","#4D8EEF"],"monochromatic":["#F7AAA1","#EF5D4D","#CE2512"]}

Variants

{"light":"#F7AAA1","dark":"#CE2512","saturated":"#FF513D","desaturated":"#DA6E62","pastel":"#F5CCC7","neon":"#FF7566"}

Nearest named colors

[{"slug":"tomato","name":"Tomato","hex":"#FF6347","distance":18.110770276274835},{"slug":"tulip-red","name":"Tulip Red","hex":"#FF4D4D","distance":22.627416997969522},{"slug":"burnt-sienna","name":"Burnt Sienna","hex":"#E97451","distance":24.1039415863879},{"slug":"terracotta","name":"Terracotta","hex":"#E2725B","distance":28.39013913315678},{"slug":"cinnabar","name":"Cinnabar","hex":"#E44D2E","distance":36.578682316343766}]

HEX meaning and use

About #EF5D4D

#EF5D4D is classified as a warm red value with vibrant visual character. #EF5D4D is visually closest to Tomato, a named red color with HEX #FF6347.

The RGB channels are 239, 93, and 77, with red carrying the strongest channel weight. In HSL, the hue is 6deg 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 0.2672, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 18.11, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text6.34:1AA Pass

White text3.31:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #EF5D4D needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000006.34:1 · AA

White text#FFFFFF3.31:1 · Fail

Accessible Alternatives

#4DDFEF#000000 text · best 13.12:1#4DDFEF

#F7AAA1#000000 text · best 11.22:1#F7AAA1

#EFAE4D#000000 text · best 10.83:1#EFAE4D

Tomato#000000 text · best 7.13:1#FF6347

Burnt Sienna#000000 text · best 7.08:1#E97451

Generated Palette

#EF5D4D#EF5D4D

#4DDFEF#4DDFEF

#EF4D8E#EF4D8E

#EFAE4D#EFAE4D

#F7AAA1#F7AAA1

#CE2512#CE2512

Color Harmonies

#4DDFEF#4DDFEF

#EF4D8E#EF4D8E

#EFAE4D#EFAE4D

#4DEF5D#4DEF5D

#5D4DEF#5D4DEF

Variants

#F7AAA1#F7AAA1

#CE2512#CE2512

#FF513D#FF513D

#DA6E62#DA6E62

#F5CCC7#F5CCC7

#FF7566#FF7566

Nearest Named Colors

Tomato#FF6347

Tulip Red#FF4D4D

Burnt Sienna#E97451

Terracotta#E2725B

Cinnabar#E44D2E

#EF5D4D

CSS

Machine-Readable HEX Data (JSON)

About #EF5D4D

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides