#8C181B#8C181B

#8C181B is a dark, vivid red. Relative luminance 0.063; OKLCH L 41.6% C 0.151 H 25.8°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#8C181B
RGB	rgb(140, 24, 27)
HSL	hsl(358, 71%, 32%)
HSV	hsv(358, 83%, 55%)
CMYK	cmyk(0%, 82.9%, 80.7%, 45.1%)
CIE-LAB	lab(30.18, 47.10, 30.06)
CIE-LCH	lch(30.18, 55.87, 32.54°)
OKLab	oklab(41.63% 0.1357 0.0655)
OKLCH	oklch(41.63% 0.151 25.8)
XYZ	xyz(11.3411, 6.3097, 1.6574)
Luminance	0.0631 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#8C181B #188C89

analogous

#8C1855 #8C181B #8C4F18

triadic

#8C181B #1B8C18 #181B8C

tetradic

#8C181B #558C18 #188C89 #4F188C

square

#8C181B #558C18 #188C89 #4F188C

split-complementary

#8C181B #188C4F #18558C

monochromatic

#240607 #580F11 #8C181B #C02125 #DE4044

Accessibility & contrast

On white

9.29

#8C181B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#8C181B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #8C181B

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##8C181B	#FFFFFF	#000000	##FFFFFF
##8C181B	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D371A

Deuteranopia (green-blind)

#5A5016

Tritanopia (blue-blind)

#9B001B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #8c181b;
/* rgb */ color: rgb(140, 24, 27);
/* oklch */ color: oklch(41.6% 0.151 25.8);

Tailwind

colors: {
  custom: {
    50: '#b66258',
    500: '#8c181b',
    950: '#000000',
  },
}

SCSS

$custom: #8c181b;
$custom-light: #b66258;
$custom-dark: #000000;

JSON

{
  "hex": "#8c181b",
  "rgb": {
    "r": 140,
    "g": 24,
    "b": 27
  },
  "hsl": {
    "h": 358.448,
    "s": 70.732,
    "l": 32.157
  },
  "oklch": {
    "l": 0.41634,
    "c": 0.15069,
    "h": 25.8
  },
  "luminance": 0.06308
}

Semantic roles & 50–950 ramp

primary

#8C181B

secondary

#41BFBC

accent

#EDE93A

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130603

muted

#827A78

Preview Lab

Preview with #8C181B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →