#370C0A#370C0A

#370C0A is a very dark, moderate red. Relative luminance 0.011; OKLCH L 23.0% C 0.069 H 26.6°. Best body text is #FFFFFF at 17.22:1 contrast (WCAG AA passes).

Color values

HEX	#370C0A
RGB	rgb(55, 12, 10)
HSL	hsl(3, 69%, 13%)
HSV	hsv(3, 82%, 22%)
CMYK	cmyk(0%, 78.2%, 81.8%, 78.4%)
CIE-LAB	lab(9.78, 21.22, 11.05)
CIE-LCH	lch(9.78, 23.93, 27.50°)
OKLab	oklab(23.04% 0.0616 0.0309)
OKLCH	oklch(23.04% 0.069 26.6)
XYZ	xyz(1.7620, 1.0973, 0.4061)
Luminance	0.0110 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370C0A #0A3537

analogous

#370A1E #370C0A #37220A

triadic

#370C0A #0A370C #0C0A37

tetradic

#370C0A #1E370A #0A3537 #220A37

square

#370C0A #1E370A #0A3537 #220A37

split-complementary

#370C0A #0A3722 #0A1E37

monochromatic

#1A0605 #1A0605 #370C0A #6B1713 #9F231D

Accessibility & contrast

On white

17.22

#370C0A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#370C0A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370C0A

17.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370C0A	#FFFFFF	#000000	##FFFFFF
##370C0A	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)

#181509

Deuteranopia (green-blind)

#231E09

Tritanopia (blue-blind)

#3D030C

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #370c0a;
/* rgb */ color: rgb(55, 12, 10);
/* oklch */ color: oklch(23.0% 0.069 26.6);

Tailwind

colors: {
  custom: {
    50: '#724e4b',
    500: '#370c0a',
    950: '#000000',
  },
}

SCSS

$custom: #370c0a;
$custom-light: #724e4b;
$custom-dark: #000000;

JSON

{
  "hex": "#370c0a",
  "rgb": {
    "r": 55,
    "g": 12,
    "b": 10
  },
  "hsl": {
    "h": 2.667,
    "s": 69.231,
    "l": 12.745
  },
  "oklch": {
    "l": 0.23037,
    "c": 0.06896,
    "h": 26.6
  },
  "luminance": 0.01097
}

Semantic roles & 50–950 ramp

primary

#370C0A

secondary

#287174

accent

#E4EC3C

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #370C0A

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

Preview Lab → · Contrast checker → · Palette generator →