#37131B#37131B

#37131B is a very dark, muted red. Relative luminance 0.014; OKLCH L 24.6% C 0.058 H 8.5°. Best body text is #FFFFFF at 16.52:1 contrast (WCAG AA passes).

Color values

HEX	#37131B
RGB	rgb(55, 19, 27)
HSL	hsl(347, 49%, 15%)
HSV	hsv(347, 65%, 22%)
CMYK	cmyk(0%, 65.5%, 50.9%, 78.4%)
CIE-LAB	lab(11.67, 18.92, 3.29)
CIE-LCH	lch(11.67, 19.20, 9.86°)
OKLab	oklab(24.59% 0.0575 0.0086)
OKLCH	oklch(24.59% 0.058 8.5)
XYZ	xyz(2.0064, 1.3573, 1.1930)
Luminance	0.0136 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37131B #13372F

analogous

#37132D #37131B #371D13

triadic

#37131B #1B3713 #131B37

tetradic

#37131B #2D3713 #13372F #1D1337

square

#37131B #2D3713 #13372F #1D1337

split-complementary

#37131B #13371D #132D37

monochromatic

#17080B #17080B #37131B #642331 #923248

Accessibility & contrast

On white

16.52

#37131B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#37131B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37131B

16.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37131B	#FFFFFF	#000000	##FFFFFF
##37131B	1.00	16.52	1.27	16.52
#FFFFFF	16.52	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A1A1B

Deuteranopia (green-blind)

#23221A

Tritanopia (blue-blind)

#3C0F16

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #37131b;
/* rgb */ color: rgb(55, 19, 27);
/* oklch */ color: oklch(24.6% 0.058 8.5);

Tailwind

colors: {
  custom: {
    50: '#705257',
    500: '#37131b',
    950: '#000000',
  },
}

SCSS

$custom: #37131b;
$custom-light: #705257;
$custom-dark: #000000;

JSON

{
  "hex": "#37131b",
  "rgb": {
    "r": 55,
    "g": 19,
    "b": 27
  },
  "hsl": {
    "h": 346.667,
    "s": 48.649,
    "l": 14.51
  },
  "oklch": {
    "l": 0.24593,
    "c": 0.05809,
    "h": 8.5
  },
  "luminance": 0.01357
}

Semantic roles & 50–950 ramp

primary

#37131B

secondary

#376F63

accent

#D8BA50

background

#F6F4F5

surface

#ECE7E9

border

#C7C3C5

text

#080203

muted

#7B7878

Preview Lab

Preview with #37131B

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

Preview Lab → · Contrast checker → · Palette generator →