#81131C#81131C

#81131C is a dark, vivid red. Relative luminance 0.052; OKLCH L 39.1% C 0.143 H 23.6°. Best body text is #FFFFFF at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#81131C
RGB	rgb(129, 19, 28)
HSL	hsl(355, 74%, 29%)
HSV	hsv(355, 85%, 51%)
CMYK	cmyk(0%, 85.3%, 78.3%, 49.4%)
CIE-LAB	lab(27.35, 45.17, 25.69)
CIE-LCH	lch(27.35, 51.97, 29.63°)
OKLab	oklab(39.12% 0.1313 0.0572)
OKLCH	oklch(39.12% 0.143 23.6)
XYZ	xyz(9.4969, 5.2183, 1.6056)
Luminance	0.0522 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81131C #138178

analogous

#811353 #81131C #814113

triadic

#81131C #1C8113 #131C81

tetradic

#81131C #538113 #138178 #411381

square

#81131C #538113 #138178 #411381

split-complementary

#81131C #138141 #135381

monochromatic

#1B0406 #4C0B10 #81131C #B61B28 #E02E3D

Accessibility & contrast

On white

10.28

#81131C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#81131C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #81131C

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81131C	#FFFFFF	#000000	##FFFFFF
##81131C	1.00	10.28	2.04	10.28
#FFFFFF	10.28	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37321B

Deuteranopia (green-blind)

#524918

Tritanopia (blue-blind)

#8F0018

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #81131c;
/* rgb */ color: rgb(129, 19, 28);
/* oklch */ color: oklch(39.1% 0.143 23.6);

Tailwind

colors: {
  custom: {
    50: '#ae5e58',
    500: '#81131c',
    950: '#000000',
  },
}

SCSS

$custom: #81131c;
$custom-light: #ae5e58;
$custom-dark: #000000;

JSON

{
  "hex": "#81131c",
  "rgb": {
    "r": 129,
    "g": 19,
    "b": 28
  },
  "hsl": {
    "h": 355.091,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.39124,
    "c": 0.14322,
    "h": 23.6
  },
  "luminance": 0.05217
}

Semantic roles & 50–950 ramp

primary

#81131C

secondary

#3AB6AC

accent

#F1E237

background

#FBF5F5

surface

#F6EAE9

border

#D0C6C5

text

#120503

muted

#817978

Preview Lab

Preview with #81131C

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

Preview Lab → · Contrast checker → · Palette generator →