#81101D#81101D

#81101D is a dark, vivid red. Relative luminance 0.051; OKLCH L 38.9% C 0.145 H 22.5°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#81101D
RGB	rgb(129, 16, 29)
HSL	hsl(353, 78%, 28%)
HSV	hsv(353, 88%, 51%)
CMYK	cmyk(0%, 87.6%, 77.5%, 49.4%)
CIE-LAB	lab(27.10, 45.97, 24.77)
CIE-LCH	lch(27.10, 52.22, 28.32°)
OKLab	oklab(38.94% 0.1341 0.0555)
OKLCH	oklch(38.94% 0.145 22.5)
XYZ	xyz(9.4615, 5.1280, 1.6538)
Luminance	0.0513 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81101D #108174

analogous

#811055 #81101D #813B10

triadic

#81101D #1D8110 #101D81

tetradic

#81101D #558110 #108174 #3B1081

square

#81101D #558110 #108174 #3B1081

split-complementary

#81101D #10813B #105581

monochromatic

#1B0306 #4B0911 #81101D #B71729 #E4273D

Accessibility & contrast

On white

10.37

#81101D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#81101D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #81101D

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81101D	#FFFFFF	#000000	##FFFFFF
##81101D	1.00	10.37	2.03	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#36311C

Deuteranopia (green-blind)

#514819

Tritanopia (blue-blind)

#8F0017

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #81101d;
/* rgb */ color: rgb(129, 16, 29);
/* oklch */ color: oklch(38.9% 0.145 22.5);

Tailwind

colors: {
  custom: {
    50: '#ae5d59',
    500: '#81101d',
    950: '#000000',
  },
}

SCSS

$custom: #81101d;
$custom-light: #ae5d59;
$custom-dark: #000000;

JSON

{
  "hex": "#81101d",
  "rgb": {
    "r": 129,
    "g": 16,
    "b": 29
  },
  "hsl": {
    "h": 353.097,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.38942,
    "c": 0.14509,
    "h": 22.5
  },
  "luminance": 0.05126
}

Semantic roles & 50–950 ramp

primary

#81101D

secondary

#36B7A8

accent

#F4DE33

background

#FBF5F5

surface

#F6EAE9

border

#D0C6C5

text

#120503

muted

#817978

Preview Lab

Preview with #81101D

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

Preview Lab → · Contrast checker → · Palette generator →