Colors Encyclopedia

HEX atlas value

#EF6B4D

#EF6B4D is a warm red HEX color close to Burnt Sienna. According to Colors Encyclopedia, it converts to RGB 239, 107, 77, HSL 11, 84%, 62%, has luminance 0.294, and belongs to the vibrant group.

redwarmvibrant
#EF6B4D Sample readable text
HEX #EF6B4D
RGB rgb(239, 107, 77)
HSL hsl(11 84% 62%)
CMYK cmyk(0, 55, 68, 6)
Luminance 0.294
Contrast Black 6.88:1White 3.05:1

CSS

--color-ef6b4d: #EF6B4D;
.background-ef6b4d { background-color: #EF6B4D; }
.text-ef6b4d { color: #EF6B4D; }

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
Luminance0.294
Black text6.88:1AA Pass
White text3.05:1AA 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":"#EF6B4D","rgb":[239,107,77],"hsl":[11,84,62],"cmyk":[0,55,68,6],"luminance":0.294,"contrast":{"black":6.88,"white":3.05}}
WCAG
{"AA":["#000000","#1A1A1A"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":6.88,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.05,"wcagAA":false,"wcagAAA":false}]
Accessible alternatives
[{"name":"#EFBC4D","hex":"#EFBC4D","family":"orange","bestTextColor":"#000000","contrastBlack":11.97,"contrastWhite":1.75,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#4DD2EF","hex":"#4DD2EF","family":"cyan","bestTextColor":"#000000","contrastBlack":11.78,"contrastWhite":1.78,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#F7B1A1","hex":"#F7B1A1","family":"red","bestTextColor":"#000000","contrastBlack":11.76,"contrastWhite":1.79,"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","Burnt Sienna 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/ef6b4d.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/burnt-sienna.json","https://www.colorsencyclopedia.com/api/colors/tomato.json","https://www.colorsencyclopedia.com/api/colors/terracotta.json"]}
Harmonies
{"complementary":"#4DD2EF","analogous":["#EF4D80","#EFBC4D"],"triadic":["#4DEF6B","#6B4DEF"],"tetradic":["#80EF4D","#4DD2EF","#BC4DEF"],"splitComplementary":["#4DEFBC","#4D80EF"],"monochromatic":["#F7B1A1","#EF6B4D","#CE3512"]}
Variants
{"light":"#F7B1A1","dark":"#CE3512","saturated":"#FF613D","desaturated":"#DA7862","pastel":"#F5CFC7","neon":"#FF8266"}
Nearest named colors
[{"slug":"burnt-sienna","name":"Burnt Sienna","hex":"#E97451","distance":11.532562594670797},{"slug":"tomato","name":"Tomato","hex":"#FF6347","distance":18.867962264113206},{"slug":"terracotta","name":"Terracotta","hex":"#E2725B","distance":20.346989949375804},{"slug":"coral","name":"Coral","hex":"#FF7F50","distance":25.787593916455254},{"slug":"tulip-red","name":"Tulip Red","hex":"#FF4D4D","distance":34}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #EF6B4D

#EF6B4D is classified as a warm red value with vibrant visual character. #EF6B4D is visually closest to Burnt Sienna, a named red color with HEX #E97451.

The RGB channels are 239, 107, and 77, with red carrying the strongest channel weight. In HSL, the hue is 11deg 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 0.294, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 11.53, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text6.88:1AA Pass
White text3.05:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #EF6B4D needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000006.88:1 · AA
White text#FFFFFF3.05:1 · Fail

Accessible Alternatives

#EFBC4D#000000 text · best 11.97:1#EFBC4D
#4DD2EF#000000 text · best 11.78:1#4DD2EF
#F7B1A1#000000 text · best 11.76:1#F7B1A1
Coral#000000 text · best 8.4:1#FF7F50
Tomato#000000 text · best 7.13:1#FF6347

Generated Palette

#EF6B4D#EF6B4D
#4DD2EF#4DD2EF
#EF4D80#EF4D80
#EFBC4D#EFBC4D
#F7B1A1#F7B1A1
#CE3512#CE3512

Color Harmonies

#4DD2EF#4DD2EF
#EF4D80#EF4D80
#EFBC4D#EFBC4D
#4DEF6B#4DEF6B
#6B4DEF#6B4DEF

Variants

#F7B1A1#F7B1A1
#CE3512#CE3512
#FF613D#FF613D
#DA7862#DA7862
#F5CFC7#F5CFC7
#FF8266#FF8266

Nearest Named Colors

Burnt Sienna#E97451
Tomato#FF6347
Terracotta#E2725B
Coral#FF7F50
Tulip Red#FF4D4D

Related HEX Guides

Burnt Sienna colorOpen the nearest named color reference for #E97451.Tomato colorOpen the nearest named color reference for #FF6347.Terracotta colorOpen the nearest named color reference for #E2725B.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.#EF6B4D APIOpen the machine-readable JSON record for this HEX value.