#81131F#81131F

#81131F is a dark, vivid red. Relative luminance 0.052; OKLCH L 39.2% C 0.143 H 22.2°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#81131F
RGB	rgb(129, 19, 31)
HSL	hsl(353, 74%, 29%)
HSV	hsv(353, 85%, 51%)
CMYK	cmyk(0%, 85.3%, 76%, 49.4%)
CIE-LAB	lab(27.39, 45.30, 23.82)
CIE-LCH	lch(27.39, 51.18, 27.74°)
OKLab	oklab(39.17% 0.1324 0.0539)
OKLCH	oklch(39.17% 0.143 22.2)
XYZ	xyz(9.5346, 5.2333, 1.8042)
Luminance	0.0523 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81131F #138175

analogous

#811356 #81131F #813E13

triadic

#81131F #1F8113 #131F81

tetradic

#81131F #568113 #138175 #3E1381

square

#81131F #568113 #138175 #3E1381

split-complementary

#81131F #13813E #135681

monochromatic

#1B0406 #4C0B12 #81131F #B61B2C #E02E42

Accessibility & contrast

On white

10.26

#81131F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#81131F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #81131F

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81131F	#FFFFFF	#000000	##FFFFFF
##81131F	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#36321E

Deuteranopia (green-blind)

#51491B

Tritanopia (blue-blind)

#8F0019

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #81131f;
/* rgb */ color: rgb(129, 19, 31);
/* oklch */ color: oklch(39.2% 0.143 22.2);

Tailwind

colors: {
  custom: {
    50: '#ae5e5a',
    500: '#81131f',
    950: '#000000',
  },
}

SCSS

$custom: #81131f;
$custom-light: #ae5e5a;
$custom-dark: #000000;

JSON

{
  "hex": "#81131f",
  "rgb": {
    "r": 129,
    "g": 19,
    "b": 31
  },
  "hsl": {
    "h": 353.455,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.39168,
    "c": 0.14297,
    "h": 22.2
  },
  "luminance": 0.05232
}

Semantic roles & 50–950 ramp

primary

#81131F

secondary

#3AB6A9

accent

#F1DD37

background

#FBF5F5

surface

#F6EAE9

border

#D0C6C5

text

#120504

muted

#817979

Preview Lab

Preview with #81131F

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

Preview Lab → · Contrast checker → · Palette generator →