HEX atlas value

#E66A05

#E66A05 is a warm orange HEX color close to Hazard Orange. According to Colors Encyclopedia, it converts to RGB 230, 106, 5, HSL 27, 96%, 46%, has luminance 0.2714, and belongs to the vibrant group.

orange warm vibrant

#E66A05 Sample readable text

HEX #E66A05

RGB rgb(230, 106, 5)

HSL hsl(27 96% 46%)

CMYK cmyk(0, 54, 98, 10)

Luminance 0.2714

Contrast Black 6.43:1White 3.27:1

CSS

--color-e66a05: #E66A05;
.background-e66a05 { background-color: #E66A05; }
.text-e66a05 { color: #E66A05; }

Luminance0.2714

Black text6.43:1AA Pass

White text3.27:1AA 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":"#E66A05","rgb":[230,106,5],"hsl":[27,96,46],"cmyk":[0,54,98,10],"luminance":0.2714,"contrast":{"black":6.43,"white":3.27}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":6.43,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.27,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#E6DB05","hex":"#E6DB05","family":"yellow","bestTextColor":"#000000","contrastBlack":14.5,"contrastWhite":1.45,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#FB9A4B","hex":"#FB9A4B","family":"orange","bestTextColor":"#000000","contrastBlack":9.83,"contrastWhite":2.14,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Tangerine","hex":"#F28500","family":"orange","bestTextColor":"#000000","contrastBlack":8.13,"contrastWhite":2.58,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Safety Orange","hex":"#FF7900","family":"orange","bestTextColor":"#000000","contrastBlack":7.99,"contrastWhite":2.63,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#8C4103","hex":"#8C4103","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.87,"contrastWhite":7.31,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]}]

AI context

{"semanticGroups":["warm orange","vibrant","vibrant orange","Hazard Orange adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/e66a05.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/hazard-orange.json","https://www.colorsencyclopedia.com/api/colors/safety-orange.json","https://www.colorsencyclopedia.com/api/colors/tangerine.json"]}

Harmonies

{"complementary":"#0581E6","analogous":["#E60510","#E6DB05"],"triadic":["#05E66A","#6A05E6"],"tetradic":["#10E605","#0581E6","#DB05E6"],"splitComplementary":["#05E6DB","#0510E6"],"monochromatic":["#FB9A4B","#E66A05","#8C4103"]}

Variants

{"light":"#FB9A4B","dark":"#8C4103","saturated":"#EB6A00","desaturated":"#CC6D1E","pastel":"#F1AF79","neon":"#FF7E14"}

Nearest named colors

[{"slug":"hazard-orange","name":"Hazard Orange","hex":"#FF6700","distance":25.67099530598687},{"slug":"safety-orange","name":"Safety Orange","hex":"#FF7900","distance":29.58039891549808},{"slug":"tangerine","name":"Tangerine","hex":"#F28500","distance":29.966648127543394},{"slug":"fire-opal","name":"Fire Opal","hex":"#E95C20","distance":30.56141357987225},{"slug":"chocolate","name":"Chocolate","hex":"#D2691E","distance":32.03123475609393}]

HEX meaning and use

About #E66A05

#E66A05 is classified as a warm orange value with vibrant visual character. #E66A05 is visually closest to Hazard Orange, a named orange color with HEX #FF6700.

The RGB channels are 230, 106, and 5, with red carrying the strongest channel weight. In HSL, the hue is 27deg with 96% saturation and 46% 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 0.2714, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 25.67, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text6.43:1AA Pass

White text3.27:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #E66A05 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000006.43:1 · AA

White text#FFFFFF3.27:1 · Fail

Accessible Alternatives

#E6DB05#000000 text · best 14.5:1#E6DB05

#FB9A4B#000000 text · best 9.83:1#FB9A4B

Tangerine#000000 text · best 8.13:1#F28500

Safety Orange#000000 text · best 7.99:1#FF7900

#8C4103#FFFFFF text · best 7.31:1#8C4103

Generated Palette

#E66A05#E66A05

#0581E6#0581E6

#E60510#E60510

#E6DB05#E6DB05

#FB9A4B#FB9A4B

#8C4103#8C4103

Color Harmonies

#0581E6#0581E6

#E60510#E60510

#E6DB05#E6DB05

#05E66A#05E66A

#6A05E6#6A05E6

Variants

#FB9A4B#FB9A4B

#8C4103#8C4103

#EB6A00#EB6A00

#CC6D1E#CC6D1E

#F1AF79#F1AF79

#FF7E14#FF7E14

Nearest Named Colors

Hazard Orange#FF6700

Safety Orange#FF7900

Tangerine#F28500

Fire Opal#E95C20

Chocolate#D2691E

#E66A05

CSS

Machine-Readable HEX Data (JSON)

About #E66A05

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides