Colors Encyclopedia

HEX atlas value

#E61005

#E61005 is a warm red HEX color close to Signal Red. According to Colors Encyclopedia, it converts to RGB 230, 16, 5, HSL 3, 96%, 46%, has luminance 0.172, and belongs to the vibrant group.

redwarmvibrant
#E61005 Sample readable text
HEX #E61005
RGB rgb(230, 16, 5)
HSL hsl(3 96% 46%)
CMYK cmyk(0, 93, 98, 10)
Luminance 0.172
Contrast Black 4.44:1White 4.73:1

CSS

--color-e61005: #E61005;
.background-e61005 { background-color: #E61005; }
.text-e61005 { color: #E61005; }

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
Luminance0.172
Black text4.44:1AA Fail
White text4.73:1AA Pass
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":"#E61005","rgb":[230,16,5],"hsl":[3,96,46],"cmyk":[0,93,98,10],"luminance":0.172,"contrast":{"black":4.44,"white":4.73}}
WCAG
{"AA":["#FFFFFF"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":4.44,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.73,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#05DBE6","hex":"#05DBE6","family":"cyan","bestTextColor":"#000000","contrastBlack":12.28,"contrastWhite":1.71,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#8C0A03","hex":"#8C0A03","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.16,"contrastWhite":9.72,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#E68105","hex":"#E68105","family":"orange","bestTextColor":"#000000","contrastBlack":7.51,"contrastWhite":2.8,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#FB544B","hex":"#FB544B","family":"red","bestTextColor":"#000000","contrastBlack":6.47,"contrastWhite":3.24,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]},{"name":"Traffic Red","hex":"#CC0605","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.6,"contrastWhite":5.84,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]}]
AI context
{"semanticGroups":["warm red","vibrant","vibrant red","Signal Red adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","high-attention visual states"],"contrastSafeWith":["#FFFFFF"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/e61005.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/signal-red.json","https://www.colorsencyclopedia.com/api/colors/traffic-red.json","https://www.colorsencyclopedia.com/api/colors/red.json"]}
Harmonies
{"complementary":"#05DBE6","analogous":["#E6056A","#E68105"],"triadic":["#05E610","#1005E6"],"tetradic":["#6AE605","#05DBE6","#8105E6"],"splitComplementary":["#05E681","#056AE6"],"monochromatic":["#FB544B","#E61005","#8C0A03"]}
Variants
{"light":"#FB544B","dark":"#8C0A03","saturated":"#EB0C00","desaturated":"#CC271E","pastel":"#F17F79","neon":"#FF2014"}
Nearest named colors
[{"slug":"signal-red","name":"Signal Red","hex":"#E60000","distance":16.76305461424021},{"slug":"traffic-red","name":"Traffic Red","hex":"#CC0605","distance":27.85677655436824},{"slug":"red","name":"Red","hex":"#FF0000","distance":30.099833886584822},{"slug":"scarlet","name":"Scarlet","hex":"#FF2400","distance":32.4037034920393},{"slug":"cadmium-red","name":"Cadmium Red","hex":"#E30022","distance":33.25657829663178}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #E61005

#E61005 is classified as a warm red value with vibrant visual character. #E61005 is visually closest to Signal Red, a named red color with HEX #E60000.

The RGB channels are 230, 16, and 5, with red carrying the strongest channel weight. In HSL, the hue is 3deg 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 0.172, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 16.76, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text4.44:1AA Fail
White text4.73:1AA Pass

AA text options: #FFFFFF.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #E61005 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.44:1 · Fail
White text#FFFFFF4.73:1 · AA

Accessible Alternatives

#05DBE6#000000 text · best 12.28:1#05DBE6
#8C0A03#FFFFFF text · best 9.72:1#8C0A03
#E68105#000000 text · best 7.51:1#E68105
#FB544B#000000 text · best 6.47:1#FB544B
Traffic Red#FFFFFF text · best 5.84:1#CC0605

Generated Palette

#E61005#E61005
#05DBE6#05DBE6
#E6056A#E6056A
#E68105#E68105
#FB544B#FB544B
#8C0A03#8C0A03

Color Harmonies

#05DBE6#05DBE6
#E6056A#E6056A
#E68105#E68105
#05E610#05E610
#1005E6#1005E6

Variants

#FB544B#FB544B
#8C0A03#8C0A03
#EB0C00#EB0C00
#CC271E#CC271E
#F17F79#F17F79
#FF2014#FF2014

Nearest Named Colors

Signal Red#E60000
Traffic Red#CC0605
Red#FF0000
Scarlet#FF2400
Cadmium Red#E30022

Related HEX Guides

Signal Red colorOpen the nearest named color reference for #E60000.Traffic Red colorOpen the nearest named color reference for #CC0605.Red colorOpen the nearest named color reference for #FF0000.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.#E61005 APIOpen the machine-readable JSON record for this HEX value.