Colors Encyclopedia

HEX atlas value

#E78040

#E78040 is a warm orange HEX color close to Burnt Sienna. According to Colors Encyclopedia, it converts to RGB 231, 128, 64, HSL 23, 78%, 58%, has luminance 0.328, and belongs to the vibrant group.

orangewarmvibrant
#E78040 Sample readable text
HEX #E78040
RGB rgb(231, 128, 64)
HSL hsl(23 78% 58%)
CMYK cmyk(0, 45, 72, 9)
Luminance 0.328
Contrast Black 7.56:1White 2.78:1

CSS

--color-e78040: #E78040;
.background-e78040 { background-color: #E78040; }
.text-e78040 { color: #E78040; }

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
Luminance0.328
Black text7.56:1AA Pass
White text2.78:1AA 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":"#E78040","rgb":[231,128,64],"hsl":[23,78,58],"cmyk":[0,45,72,9],"luminance":0.328,"contrast":{"black":7.56,"white":2.78}}
WCAG
{"AA":["#000000","#1A1A1A"],"AAA":["#000000"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":7.56,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.78,"wcagAA":false,"wcagAAA":false}]
Accessible alternatives
[{"name":"#E7D440","hex":"#E7D440","family":"yellow","bestTextColor":"#000000","contrastBlack":13.89,"contrastWhite":1.51,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#F2B792","hex":"#F2B792","family":"orange","bestTextColor":"#000000","contrastBlack":11.96,"contrastWhite":1.76,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Butterscotch","hex":"#E3963E","family":"orange","bestTextColor":"#000000","contrastBlack":8.7,"contrastWhite":2.41,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Coral","hex":"#FF7F50","family":"orange","bestTextColor":"#000000","contrastBlack":8.4,"contrastWhite":2.5,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#FF7B29","hex":"#FF7B29","family":"orange","bestTextColor":"#000000","contrastBlack":8.12,"contrastWhite":2.59,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]}]
AI context
{"semanticGroups":["warm orange","vibrant","vibrant orange","Burnt Sienna adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/e78040.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/burnt-sienna.json","https://www.colorsencyclopedia.com/api/colors/cadmium-orange.json","https://www.colorsencyclopedia.com/api/colors/butterscotch.json"]}
Harmonies
{"complementary":"#40A7E7","analogous":["#E74054","#E7D440"],"triadic":["#40E780","#8040E7"],"tetradic":["#54E740","#40A7E7","#D440E7"],"splitComplementary":["#40E7D4","#4054E7"],"monochromatic":["#F2B792","#E78040","#B65316"]}
Variants
{"light":"#F2B792","dark":"#B65316","saturated":"#FF7B29","desaturated":"#D08658","pastel":"#EFCDB8","neon":"#FF9452"}
Nearest named colors
[{"slug":"burnt-sienna","name":"Burnt Sienna","hex":"#E97451","distance":20.904544960366874},{"slug":"cadmium-orange","name":"Cadmium Orange","hex":"#ED872D","distance":21.118712081942874},{"slug":"butterscotch","name":"Butterscotch","hex":"#E3963E","distance":22.44994432064365},{"slug":"peru","name":"Peru","hex":"#CD853F","distance":26.49528259898354},{"slug":"coral","name":"Coral","hex":"#FF7F50","distance":28.861739379323623}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #E78040

#E78040 is classified as a warm orange value with vibrant visual character. #E78040 is visually closest to Burnt Sienna, a named red color with HEX #E97451.

The RGB channels are 231, 128, and 64, with red carrying the strongest channel weight. In HSL, the hue is 23deg 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 0.328, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 20.90, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text7.56:1AA Pass
White text2.78:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: #000000.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #E78040 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000007.56:1 · AAA
White text#FFFFFF2.78:1 · Fail

Accessible Alternatives

#E7D440#000000 text · best 13.89:1#E7D440
#F2B792#000000 text · best 11.96:1#F2B792
Butterscotch#000000 text · best 8.7:1#E3963E
Coral#000000 text · best 8.4:1#FF7F50
#FF7B29#000000 text · best 8.12:1#FF7B29

Generated Palette

#E78040#E78040
#40A7E7#40A7E7
#E74054#E74054
#E7D440#E7D440
#F2B792#F2B792
#B65316#B65316

Color Harmonies

#40A7E7#40A7E7
#E74054#E74054
#E7D440#E7D440
#40E780#40E780
#8040E7#8040E7

Variants

#F2B792#F2B792
#B65316#B65316
#FF7B29#FF7B29
#D08658#D08658
#EFCDB8#EFCDB8
#FF9452#FF9452

Nearest Named Colors

Burnt Sienna#E97451
Cadmium Orange#ED872D
Butterscotch#E3963E
Peru#CD853F
Coral#FF7F50

Related HEX Guides

Burnt Sienna colorOpen the nearest named color reference for #E97451.Cadmium Orange colorOpen the nearest named color reference for #ED872D.Butterscotch colorOpen the nearest named color reference for #E3963E.Orange color familyBrowse named orange 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.#E78040 APIOpen the machine-readable JSON record for this HEX value.