HEX atlas value

#E61B05

#E61B05 is a warm red HEX color close to Scarlet. According to Colors Encyclopedia, it converts to RGB 230, 27, 5, HSL 6, 96%, 46%, has luminance 0.1762, and belongs to the vibrant group.

red warm vibrant

#E61B05 Sample readable text

HEX #E61B05

RGB rgb(230, 27, 5)

HSL hsl(6 96% 46%)

CMYK cmyk(0, 88, 98, 10)

Luminance 0.1762

Contrast Black 4.52:1White 4.64:1

CSS

--color-e61b05: #E61B05;
.background-e61b05 { background-color: #E61B05; }
.text-e61b05 { color: #E61B05; }

Luminance0.1762

Black text4.52:1AA Pass

White text4.64:1AA 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

Structured sections

Color systems

{"hex":"#E61B05","rgb":[230,27,5],"hsl":[6,96,46],"cmyk":[0,88,98,10],"luminance":0.1762,"contrast":{"black":4.52,"white":4.64}}

WCAG

{"AA":["#000000","#FFFFFF"],"AAA":[]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":4.52,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.64,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#05CFE6","hex":"#05CFE6","family":"cyan","bestTextColor":"#000000","contrastBlack":11.07,"contrastWhite":1.9,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#8C1103","hex":"#8C1103","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.2,"contrastWhite":9.56,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#E68C05","hex":"#E68C05","family":"orange","bestTextColor":"#000000","contrastBlack":8.12,"contrastWhite":2.59,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#FB5D4B","hex":"#FB5D4B","family":"red","bestTextColor":"#000000","contrastBlack":6.77,"contrastWhite":3.1,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]},{"name":"Venetian Red","hex":"#C80815","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.5,"contrastWhite":6,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]}]

AI context

{"semanticGroups":["warm red","vibrant","vibrant red","Scarlet adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","high-attention visual states"],"contrastSafeWith":["#000000","#FFFFFF"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/e61b05.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/scarlet.json","https://www.colorsencyclopedia.com/api/colors/signal-red.json","https://www.colorsencyclopedia.com/api/colors/traffic-red.json"]}

Harmonies

{"complementary":"#05CFE6","analogous":["#E6055F","#E68C05"],"triadic":["#05E61B","#1B05E6"],"tetradic":["#5FE605","#05CFE6","#8C05E6"],"splitComplementary":["#05E68C","#055FE6"],"monochromatic":["#FB5D4B","#E61B05","#8C1103"]}

Variants

{"light":"#FB5D4B","dark":"#8C1103","saturated":"#EB1700","desaturated":"#CC301E","pastel":"#F18579","neon":"#FF2C14"}

Nearest named colors

[{"slug":"scarlet","name":"Scarlet","hex":"#FF2400","distance":27.03701166919155},{"slug":"signal-red","name":"Signal Red","hex":"#E60000","distance":27.459060435491963},{"slug":"traffic-red","name":"Traffic Red","hex":"#CC0605","distance":33.421549934136806},{"slug":"red","name":"Red","hex":"#FF0000","distance":37.134889255254286},{"slug":"venetian-red","name":"Venetian Red","hex":"#C80815","distance":38.948684188300895}]

HEX meaning and use

About #E61B05

#E61B05 is classified as a warm red value with vibrant visual character. #E61B05 is visually closest to Scarlet, a named red color with HEX #FF2400.

The RGB channels are 230, 27, and 5, with red carrying the strongest channel weight. In HSL, the hue is 6deg 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 0.1762, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 27.04, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text4.52:1AA Pass

White text4.64:1AA Pass

AA text options: #000000, #FFFFFF.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #E61B05 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.52:1 · AA

White text#FFFFFF4.64:1 · AA

Accessible Alternatives

#05CFE6#000000 text · best 11.07:1#05CFE6

#8C1103#FFFFFF text · best 9.56:1#8C1103

#E68C05#000000 text · best 8.12:1#E68C05

#FB5D4B#000000 text · best 6.77:1#FB5D4B

Venetian Red#FFFFFF text · best 6:1#C80815

Generated Palette

#E61B05#E61B05

#05CFE6#05CFE6

#E6055F#E6055F

#E68C05#E68C05

#FB5D4B#FB5D4B

#8C1103#8C1103

Color Harmonies

#05CFE6#05CFE6

#E6055F#E6055F

#E68C05#E68C05

#05E61B#05E61B

#1B05E6#1B05E6

Variants

#FB5D4B#FB5D4B

#8C1103#8C1103

#EB1700#EB1700

#CC301E#CC301E

#F18579#F18579

#FF2C14#FF2C14

Nearest Named Colors

Scarlet#FF2400

Signal Red#E60000

Traffic Red#CC0605

Red#FF0000

Venetian Red#C80815

#E61B05

CSS

Machine-Readable HEX Data (JSON)

About #E61B05

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides