#83101B#83101B

#83101B is a dark, vivid red. Relative luminance 0.053; OKLCH L 39.3% C 0.147 H 23.6°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#83101B
RGB	rgb(131, 16, 27)
HSL	hsl(354, 78%, 29%)
HSV	hsv(354, 88%, 51%)
CMYK	cmyk(0%, 87.8%, 79.4%, 48.6%)
CIE-LAB	lab(27.51, 46.48, 26.63)
CIE-LCH	lch(27.51, 53.56, 29.81°)
OKLab	oklab(39.32% 0.1349 0.0588)
OKLCH	oklch(39.32% 0.147 23.6)
XYZ	xyz(9.7444, 5.2766, 1.5421)
Luminance	0.0527 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#83101B #108378

analogous

#831055 #83101B #833F10

triadic

#83101B #1B8310 #101B83

tetradic

#83101B #558310 #108378 #3F1083

square

#83101B #558310 #108378 #3F1083

split-complementary

#83101B #10833F #105583

monochromatic

#1B0306 #4C0910 #83101B #BA1726 #E5293B

Accessibility & contrast

On white

10.22

#83101B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#83101B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #83101B

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##83101B	#FFFFFF	#000000	##FFFFFF
##83101B	1.00	10.22	2.06	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37311A

Deuteranopia (green-blind)

#524A16

Tritanopia (blue-blind)

#910016

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #83101b;
/* rgb */ color: rgb(131, 16, 27);
/* oklch */ color: oklch(39.3% 0.147 23.6);

Tailwind

colors: {
  custom: {
    50: '#b05e57',
    500: '#83101b',
    950: '#000000',
  },
}

SCSS

$custom: #83101b;
$custom-light: #b05e57;
$custom-dark: #000000;

JSON

{
  "hex": "#83101b",
  "rgb": {
    "r": 131,
    "g": 16,
    "b": 27
  },
  "hsl": {
    "h": 354.261,
    "s": 78.231,
    "l": 28.824
  },
  "oklch": {
    "l": 0.39315,
    "c": 0.14718,
    "h": 23.6
  },
  "luminance": 0.05275
}

Semantic roles & 50–950 ramp

primary

#83101B

secondary

#36B9AC

accent

#F5E233

background

#FBF5F5

surface

#F7EAE9

border

#D0C6C5

text

#120503

muted

#817978

Preview Lab

Preview with #83101B

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

Preview Lab → · Contrast checker → · Palette generator →