#81101F#81101F

#81101F is a dark, vivid red. Relative luminance 0.051; OKLCH L 39.0% C 0.145 H 21.5°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#81101F
RGB	rgb(129, 16, 31)
HSL	hsl(352, 78%, 28%)
HSV	hsv(352, 88%, 51%)
CMYK	cmyk(0%, 87.6%, 76%, 49.4%)
CIE-LAB	lab(27.12, 46.05, 23.52)
CIE-LCH	lch(27.12, 51.71, 27.05°)
OKLab	oklab(38.97% 0.1348 0.0532)
OKLCH	oklch(38.97% 0.145 21.5)
XYZ	xyz(9.4870, 5.1382, 1.7883)
Luminance	0.0514 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81101F #108172

analogous

#811057 #81101F #813910

triadic

#81101F #1F8110 #101F81

tetradic

#81101F #578110 #108172 #391081

square

#81101F #578110 #108172 #391081

split-complementary

#81101F #108139 #105781

monochromatic

#1B0307 #4B0912 #81101F #B7172C #E42740

Accessibility & contrast

On white

10.36

#81101F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#81101F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #81101F

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81101F	#FFFFFF	#000000	##FFFFFF
##81101F	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)

#35311E

Deuteranopia (green-blind)

#51481B

Tritanopia (blue-blind)

#8F0017

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #81101f;
/* rgb */ color: rgb(129, 16, 31);
/* oklch */ color: oklch(39.0% 0.145 21.5);

Tailwind

colors: {
  custom: {
    50: '#ae5d5a',
    500: '#81101f',
    950: '#000000',
  },
}

SCSS

$custom: #81101f;
$custom-light: #ae5d5a;
$custom-dark: #000000;

JSON

{
  "hex": "#81101f",
  "rgb": {
    "r": 129,
    "g": 16,
    "b": 31
  },
  "hsl": {
    "h": 352.035,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.38972,
    "c": 0.14495,
    "h": 21.5
  },
  "luminance": 0.05137
}

Semantic roles & 50–950 ramp

primary

#81101F

secondary

#36B7A6

accent

#F4DB33

background

#FBF5F5

surface

#F6EAE9

border

#D0C6C5

text

#120503

muted

#817978

Preview Lab

Preview with #81101F

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

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