#37181C#37181C

#37181C is a dark, muted red. Relative luminance 0.015; OKLCH L 25.5% C 0.049 H 13.1°. Best body text is #FFFFFF at 16.03:1 contrast (WCAG AA passes).

Color values

HEX	#37181C
RGB	rgb(55, 24, 28)
HSL	hsl(352, 39%, 15%)
HSV	hsv(352, 56%, 22%)
CMYK	cmyk(0%, 56.4%, 49.1%, 78.4%)
CIE-LAB	lab(12.92, 15.91, 4.31)
CIE-LCH	lch(12.92, 16.49, 15.16°)
OKLab	oklab(25.55% 0.0482 0.0112)
OKLCH	oklch(25.55% 0.049 13.1)
XYZ	xyz(2.1119, 1.5495, 1.2863)
Luminance	0.0155 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37181C #183733

analogous

#37182B #37181C #372318

triadic

#37181C #1C3718 #181C37

tetradic

#37181C #2B3718 #183733 #231837

square

#37181C #2B3718 #183733 #231837

split-complementary

#37181C #183723 #182B37

monochromatic

#15090B #15090B #37181C #622B32 #8C3D47

Accessibility & contrast

On white

16.03

#37181C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#37181C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37181C

16.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37181C	#FFFFFF	#000000	##FFFFFF
##37181C	1.00	16.03	1.31	16.03
#FFFFFF	16.03	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1E1C

Deuteranopia (green-blind)

#26241B

Tritanopia (blue-blind)

#3C141A

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #37181c;
/* rgb */ color: rgb(55, 24, 28);
/* oklch */ color: oklch(25.5% 0.049 13.1);

Tailwind

colors: {
  custom: {
    50: '#705557',
    500: '#37181c',
    950: '#000000',
  },
}

SCSS

$custom: #37181c;
$custom-light: #705557;
$custom-dark: #000000;

JSON

{
  "hex": "#37181c",
  "rgb": {
    "r": 55,
    "g": 24,
    "b": 28
  },
  "hsl": {
    "h": 352.258,
    "s": 39.241,
    "l": 15.49
  },
  "oklch": {
    "l": 0.25545,
    "c": 0.04946,
    "h": 13.1
  },
  "luminance": 0.01549
}

Semantic roles & 50–950 ramp

primary

#37181C

secondary

#3E6D67

accent

#CFC059

background

#F6F5F5

surface

#ECE9E9

border

#C7C5C5

text

#070303

muted

#7A7878

Preview Lab

Preview with #37181C

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

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