HEX atlas value

#EF604D

#EF604D is a warm red HEX color close to Tomato. According to Colors Encyclopedia, it converts to RGB 239, 96, 77, HSL 7, 84%, 62%, has luminance 0.2725, and belongs to the vibrant group.

red warm vibrant

#EF604D Sample readable text

HEX #EF604D

RGB rgb(239, 96, 77)

HSL hsl(7 84% 62%)

CMYK cmyk(0, 60, 68, 6)

Luminance 0.2725

Contrast Black 6.45:1White 3.26:1

CSS

--color-ef604d: #EF604D;
.background-ef604d { background-color: #EF604D; }
.text-ef604d { color: #EF604D; }

Luminance0.2725

Black text6.45:1AA Pass

White text3.26:1AA 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":"#EF604D","rgb":[239,96,77],"hsl":[7,84,62],"cmyk":[0,60,68,6],"luminance":0.2725,"contrast":{"black":6.45,"white":3.26}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":6.45,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.26,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#4DDDEF","hex":"#4DDDEF","family":"cyan","bestTextColor":"#000000","contrastBlack":12.9,"contrastWhite":1.63,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#F7ABA1","hex":"#F7ABA1","family":"red","bestTextColor":"#000000","contrastBlack":11.29,"contrastWhite":1.86,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#EFB14D","hex":"#EFB14D","family":"orange","bestTextColor":"#000000","contrastBlack":11.07,"contrastWhite":1.9,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Coral","hex":"#FF7F50","family":"orange","bestTextColor":"#000000","contrastBlack":8.4,"contrastWhite":2.5,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Tomato","hex":"#FF6347","family":"red","bestTextColor":"#000000","contrastBlack":7.13,"contrastWhite":2.95,"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/ef604d.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/tomato.json","https://www.colorsencyclopedia.com/api/colors/burnt-sienna.json","https://www.colorsencyclopedia.com/api/colors/tulip-red.json"]}

Harmonies

{"complementary":"#4DDDEF","analogous":["#EF4D8B","#EFB14D"],"triadic":["#4DEF60","#604DEF"],"tetradic":["#8BEF4D","#4DDDEF","#B14DEF"],"splitComplementary":["#4DEFB1","#4D8BEF"],"monochromatic":["#F7ABA1","#EF604D","#CE2812"]}

Variants

{"light":"#F7ABA1","dark":"#CE2812","saturated":"#FF543D","desaturated":"#DA7062","pastel":"#F5CCC7","neon":"#FF7866"}

Nearest named colors

[{"slug":"tomato","name":"Tomato","hex":"#FF6347","distance":17.349351572897472},{"slug":"burnt-sienna","name":"Burnt Sienna","hex":"#E97451","distance":21.2602916254693},{"slug":"tulip-red","name":"Tulip Red","hex":"#FF4D4D","distance":24.839484696748443},{"slug":"terracotta","name":"Terracotta","hex":"#E2725B","distance":26.248809496813376},{"slug":"coral","name":"Coral","hex":"#FF7F50","distance":35.014282800023196}]

HEX meaning and use

About #EF604D

#EF604D is classified as a warm red value with vibrant visual character. #EF604D is visually closest to Tomato, a named red color with HEX #FF6347.

The RGB channels are 239, 96, and 77, with red carrying the strongest channel weight. In HSL, the hue is 7deg 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 0.2725, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 17.35, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text6.45:1AA Pass

White text3.26:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #EF604D needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000006.45:1 · AA

White text#FFFFFF3.26:1 · Fail

Accessible Alternatives

#4DDDEF#000000 text · best 12.9:1#4DDDEF

#F7ABA1#000000 text · best 11.29:1#F7ABA1

#EFB14D#000000 text · best 11.07:1#EFB14D

Coral#000000 text · best 8.4:1#FF7F50

Tomato#000000 text · best 7.13:1#FF6347

Generated Palette

#EF604D#EF604D

#4DDDEF#4DDDEF

#EF4D8B#EF4D8B

#EFB14D#EFB14D

#F7ABA1#F7ABA1

#CE2812#CE2812

Color Harmonies

#4DDDEF#4DDDEF

#EF4D8B#EF4D8B

#EFB14D#EFB14D

#4DEF60#4DEF60

#604DEF#604DEF

Variants

#F7ABA1#F7ABA1

#CE2812#CE2812

#FF543D#FF543D

#DA7062#DA7062

#F5CCC7#F5CCC7

#FF7866#FF7866

Nearest Named Colors

Tomato#FF6347

Burnt Sienna#E97451

Tulip Red#FF4D4D

Terracotta#E2725B

Coral#FF7F50

#EF604D

CSS

Machine-Readable HEX Data (JSON)

About #EF604D

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides