#81101E#81101E

#81101E is a dark, vivid red. Relative luminance 0.051; OKLCH L 39.0% C 0.145 H 22.0°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#81101E
RGB	rgb(129, 16, 30)
HSL	hsl(353, 78%, 28%)
HSV	hsv(353, 88%, 51%)
CMYK	cmyk(0%, 87.6%, 76.7%, 49.4%)
CIE-LAB	lab(27.11, 46.01, 24.15)
CIE-LCH	lch(27.11, 51.96, 27.69°)
OKLab	oklab(38.96% 0.1344 0.0544)
OKLCH	oklch(38.96% 0.145 22)
XYZ	xyz(9.4740, 5.1330, 1.7200)
Luminance	0.0513 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81101E #108173

analogous

#811056 #81101E #813A10

triadic

#81101E #1E8110 #101E81

tetradic

#81101E #568110 #108173 #3A1081

square

#81101E #568110 #108173 #3A1081

split-complementary

#81101E #10813A #105681

monochromatic

#1B0306 #4B0911 #81101E #B7172B #E4273F

Accessibility & contrast

On white

10.36

#81101E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#81101E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #81101E

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81101E	#FFFFFF	#000000	##FFFFFF
##81101E	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#35311D

Deuteranopia (green-blind)

#51481A

Tritanopia (blue-blind)

#8F0017

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #81101e;
/* rgb */ color: rgb(129, 16, 30);
/* oklch */ color: oklch(39.0% 0.145 22.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#81101e",
  "rgb": {
    "r": 129,
    "g": 16,
    "b": 30
  },
  "hsl": {
    "h": 352.566,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.38957,
    "c": 0.14502,
    "h": 22
  },
  "luminance": 0.05131
}

Semantic roles & 50–950 ramp

primary

#81101E

secondary

#36B7A7

accent

#F4DD33

background

#FBF5F5

surface

#F6EAE9

border

#D0C6C5

text

#120503

muted

#817978

Preview Lab

Preview with #81101E

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

Preview Lab → · Contrast checker → · Palette generator →