HEX atlas value

#E3621C

#E3621C is a warm orange HEX color close to Fire Opal. According to Colors Encyclopedia, it converts to RGB 227, 98, 28, HSL 21, 78%, 50%, has luminance 0.2515, and belongs to the vibrant group.

orange warm vibrant

#E3621C Sample readable text

HEX #E3621C

RGB rgb(227, 98, 28)

HSL hsl(21 78% 50%)

CMYK cmyk(0, 57, 88, 11)

Luminance 0.2515

Contrast Black 6.03:1White 3.48:1

CSS

--color-e3621c: #E3621C;
.background-e3621c { background-color: #E3621C; }
.text-e3621c { color: #E3621C; }

Luminance0.2515

Black text6.03:1AA Pass

White text3.48:1AA 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":"#E3621C","rgb":[227,98,28],"hsl":[21,78,50],"cmyk":[0,57,88,11],"luminance":0.2515,"contrast":{"black":6.03,"white":3.48}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":6.03,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.48,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#E3C51C","hex":"#E3C51C","family":"yellow","bestTextColor":"#000000","contrastBlack":12.27,"contrastWhite":1.71,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#ED9A6E","hex":"#ED9A6E","family":"orange","bestTextColor":"#000000","contrastBlack":9.45,"contrastWhite":2.22,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#913F12","hex":"#913F12","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.92,"contrastWhite":7.18,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"#1C9DE3","hex":"#1C9DE3","family":"blue","bestTextColor":"#000000","contrastBlack":6.98,"contrastWhite":3.01,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]},{"name":"Neon Orange","hex":"#FF5F1F","family":"orange","bestTextColor":"#000000","contrastBlack":6.91,"contrastWhite":3.04,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]

AI context

{"semanticGroups":["warm orange","vibrant","vibrant orange","Fire Opal adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/e3621c.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/fire-opal.json","https://www.colorsencyclopedia.com/api/colors/chocolate.json","https://www.colorsencyclopedia.com/api/colors/cinnamon.json"]}

Harmonies

{"complementary":"#1C9DE3","analogous":["#E31C3A","#E3C51C"],"triadic":["#1CE362","#621CE3"],"tetradic":["#3AE31C","#1C9DE3","#C51CE3"],"splitComplementary":["#1CE3C5","#1C3AE3"],"monochromatic":["#ED9A6E","#E3621C","#913F12"]}

Variants

{"light":"#ED9A6E","dark":"#913F12","saturated":"#FF5900","desaturated":"#C76A38","pastel":"#E7B397","neon":"#FF7429"}

Nearest named colors

[{"slug":"fire-opal","name":"Fire Opal","hex":"#E95C20","distance":9.38083151964686},{"slug":"chocolate","name":"Chocolate","hex":"#D2691E","distance":18.49324200890693},{"slug":"cinnamon","name":"Cinnamon","hex":"#D2691E","distance":18.49324200890693},{"slug":"cinnabar","name":"Cinnabar","hex":"#E44D2E","distance":27.676705006196094},{"slug":"neon-orange","name":"Neon Orange","hex":"#FF5F1F","distance":28.319604517012593}]

HEX meaning and use

About #E3621C

#E3621C is classified as a warm orange value with vibrant visual character. #E3621C is visually closest to Fire Opal, a named orange color with HEX #E95C20.

The RGB channels are 227, 98, and 28, with red carrying the strongest channel weight. In HSL, the hue is 21deg with 78% saturation and 50% 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 0.2515, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 9.38, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text6.03:1AA Pass

White text3.48:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #E3621C needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000006.03:1 · AA

White text#FFFFFF3.48:1 · Fail

Accessible Alternatives

#E3C51C#000000 text · best 12.27:1#E3C51C

#ED9A6E#000000 text · best 9.45:1#ED9A6E

#913F12#FFFFFF text · best 7.18:1#913F12

#1C9DE3#000000 text · best 6.98:1#1C9DE3

Neon Orange#000000 text · best 6.91:1#FF5F1F

Generated Palette

#E3621C#E3621C

#1C9DE3#1C9DE3

#E31C3A#E31C3A

#E3C51C#E3C51C

#ED9A6E#ED9A6E

#913F12#913F12

Color Harmonies

#1C9DE3#1C9DE3

#E31C3A#E31C3A

#E3C51C#E3C51C

#1CE362#1CE362

#621CE3#621CE3

Variants

#ED9A6E#ED9A6E

#913F12#913F12

#FF5900#FF5900

#C76A38#C76A38

#E7B397#E7B397

#FF7429#FF7429

Nearest Named Colors

Fire Opal#E95C20

Chocolate#D2691E

Cinnamon#D2691E

Cinnabar#E44D2E

Neon Orange#FF5F1F

#E3621C

CSS

Machine-Readable HEX Data (JSON)

About #E3621C

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides