#370C0B#370C0B

#370C0B is a very dark, moderate red. Relative luminance 0.011; OKLCH L 23.1% C 0.069 H 25.5°. Best body text is #FFFFFF at 17.22:1 contrast (WCAG AA passes).

Color values

HEX	#370C0B
RGB	rgb(55, 12, 11)
HSL	hsl(1, 67%, 13%)
HSV	hsv(1, 80%, 22%)
CMYK	cmyk(0%, 78.2%, 80%, 78.4%)
CIE-LAB	lab(9.79, 21.28, 10.66)
CIE-LCH	lch(9.79, 23.80, 26.59°)
OKLab	oklab(23.06% 0.0621 0.0296)
OKLCH	oklch(23.06% 0.069 25.5)
XYZ	xyz(1.7676, 1.0996, 0.4357)
Luminance	0.0110 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370C0B #0B3637

analogous

#370B20 #370C0B #37220B

triadic

#370C0B #0B370C #0C0B37

tetradic

#370C0B #20370B #0B3637 #220B37

square

#370C0B #20370B #0B3637 #220B37

split-complementary

#370C0B #0B3722 #0B2037

monochromatic

#1A0605 #1A0605 #370C0B #6A1715 #9D221F

Accessibility & contrast

On white

17.22

#370C0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#370C0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370C0B

17.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370C0B	#FFFFFF	#000000	##FFFFFF
##370C0B	1.00	17.22	1.22	17.22
#FFFFFF	17.22	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18150B

Deuteranopia (green-blind)

#231E0A

Tritanopia (blue-blind)

#3D030C

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #370c0b;
/* rgb */ color: rgb(55, 12, 11);
/* oklch */ color: oklch(23.1% 0.069 25.5);

Tailwind

colors: {
  custom: {
    50: '#724e4b',
    500: '#370c0b',
    950: '#000000',
  },
}

SCSS

$custom: #370c0b;
$custom-light: #724e4b;
$custom-dark: #000000;

JSON

{
  "hex": "#370c0b",
  "rgb": {
    "r": 55,
    "g": 12,
    "b": 11
  },
  "hsl": {
    "h": 1.364,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.23056,
    "c": 0.06879,
    "h": 25.5
  },
  "luminance": 0.01099
}

Semantic roles & 50–950 ramp

primary

#370C0B

secondary

#2A7274

accent

#E6EA3E

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #370C0B

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

Preview Lab → · Contrast checker → · Palette generator →