#37181D#37181D

#37181D is a dark, muted red. Relative luminance 0.016; OKLCH L 25.6% C 0.050 H 11.0°. Best body text is #FFFFFF at 16.02:1 contrast (WCAG AA passes).

Color values

HEX	#37181D
RGB	rgb(55, 24, 29)
HSL	hsl(350, 39%, 15%)
HSV	hsv(350, 56%, 22%)
CMYK	cmyk(0%, 56.4%, 47.3%, 78.4%)
CIE-LAB	lab(12.95, 16.05, 3.62)
CIE-LCH	lch(12.95, 16.46, 12.71°)
OKLab	oklab(25.58% 0.0487 0.0095)
OKLCH	oklch(25.58% 0.05 11)
XYZ	xyz(2.1241, 1.5544, 1.3503)
Luminance	0.0155 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37181D #183732

analogous

#37182C #37181D #372218

triadic

#37181D #1D3718 #181D37

tetradic

#37181D #2C3718 #183732 #221837

square

#37181D #2C3718 #183732 #221837

split-complementary

#37181D #183722 #182C37

monochromatic

#15090B #15090B #37181D #622B33 #8C3D4A

Accessibility & contrast

On white

16.02

#37181D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#37181D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37181D

16.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37181D	#FFFFFF	#000000	##FFFFFF
##37181D	1.00	16.02	1.31	16.02
#FFFFFF	16.02	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1E1D

Deuteranopia (green-blind)

#26241C

Tritanopia (blue-blind)

#3C151A

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #37181d;
/* rgb */ color: rgb(55, 24, 29);
/* oklch */ color: oklch(25.6% 0.050 11.0);

Tailwind

colors: {
  custom: {
    50: '#705558',
    500: '#37181d',
    950: '#000000',
  },
}

SCSS

$custom: #37181d;
$custom-light: #705558;
$custom-dark: #000000;

JSON

{
  "hex": "#37181d",
  "rgb": {
    "r": 55,
    "g": 24,
    "b": 29
  },
  "hsl": {
    "h": 350.323,
    "s": 39.241,
    "l": 15.49
  },
  "oklch": {
    "l": 0.25578,
    "c": 0.04957,
    "h": 11
  },
  "luminance": 0.01554
}

Semantic roles & 50–950 ramp

primary

#37181D

secondary

#3E6D65

accent

#CFBC59

background

#F6F5F5

surface

#ECE9E9

border

#C7C5C5

text

#070303

muted

#7A7878

Preview Lab

Preview with #37181D

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

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