#81101A#81101A

#81101A is a dark, vivid red. Relative luminance 0.051; OKLCH L 38.9% C 0.145 H 23.8°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#81101A
RGB	rgb(129, 16, 26)
HSL	hsl(355, 78%, 28%)
HSV	hsv(355, 88%, 51%)
CMYK	cmyk(0%, 87.6%, 79.8%, 49.4%)
CIE-LAB	lab(27.06, 45.85, 26.64)
CIE-LCH	lch(27.06, 53.03, 30.15°)
OKLab	oklab(38.9% 0.133 0.0587)
OKLCH	oklch(38.9% 0.145 23.8)
XYZ	xyz(9.4262, 5.1138, 1.4678)
Luminance	0.0511 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81101A #108177

analogous

#811052 #81101A #813E10

triadic

#81101A #1A8110 #101A81

tetradic

#81101A #528110 #108177 #3E1081

square

#81101A #528110 #108177 #3E1081

split-complementary

#81101A #10813E #105281

monochromatic

#1B0305 #4B090F #81101A #B71725 #E42738

Accessibility & contrast

On white

10.38

#81101A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#81101A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #81101A

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81101A	#FFFFFF	#000000	##FFFFFF
##81101A	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363119

Deuteranopia (green-blind)

#514815

Tritanopia (blue-blind)

#8F0016

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #81101a;
/* rgb */ color: rgb(129, 16, 26);
/* oklch */ color: oklch(38.9% 0.145 23.8);

Tailwind

colors: {
  custom: {
    50: '#ae5d56',
    500: '#81101a',
    950: '#000000',
  },
}

SCSS

$custom: #81101a;
$custom-light: #ae5d56;
$custom-dark: #000000;

JSON

{
  "hex": "#81101a",
  "rgb": {
    "r": 129,
    "g": 16,
    "b": 26
  },
  "hsl": {
    "h": 354.69,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.389,
    "c": 0.14534,
    "h": 23.8
  },
  "luminance": 0.05112
}

Semantic roles & 50–950 ramp

primary

#81101A

secondary

#36B7AC

accent

#F4E333

background

#FBF5F5

surface

#F6EAE9

border

#D0C6C5

text

#120503

muted

#817978

Preview Lab

Preview with #81101A

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

Preview Lab → · Contrast checker → · Palette generator →