#370B09#370B09

#370B09 is a very dark, moderate red. Relative luminance 0.011; OKLCH L 22.9% C 0.070 H 26.9°. Best body text is #FFFFFF at 17.30:1 contrast (WCAG AA passes).

Color values

HEX	#370B09
RGB	rgb(55, 11, 9)
HSL	hsl(3, 72%, 13%)
HSV	hsv(3, 84%, 22%)
CMYK	cmyk(0%, 80%, 83.6%, 78.4%)
CIE-LAB	lab(9.57, 21.67, 11.16)
CIE-LCH	lch(9.57, 24.37, 27.26°)
OKLab	oklab(22.88% 0.0628 0.0318)
OKLCH	oklch(22.88% 0.07 26.9)
XYZ	xyz(1.7447, 1.0715, 0.3734)
Luminance	0.0107 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370B09 #093537

analogous

#37091E #370B09 #372209

triadic

#370B09 #09370B #0B0937

tetradic

#370B09 #1E3709 #093537 #220937

square

#370B09 #1E3709 #093537 #220937

split-complementary

#370B09 #093722 #091E37

monochromatic

#1A0504 #1A0504 #370B09 #6C1612 #A0201A

Accessibility & contrast

On white

17.30

#370B09 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#370B09 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370B09

17.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370B09	#FFFFFF	#000000	##FFFFFF
##370B09	1.00	17.30	1.21	17.30
#FFFFFF	17.30	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#171508

Deuteranopia (green-blind)

#221E08

Tritanopia (blue-blind)

#3D020B

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #370b09;
/* rgb */ color: rgb(55, 11, 9);
/* oklch */ color: oklch(22.9% 0.070 26.9);

Tailwind

colors: {
  custom: {
    50: '#724d4a',
    500: '#370b09',
    950: '#000000',
  },
}

SCSS

$custom: #370b09;
$custom-light: #724d4a;
$custom-dark: #000000;

JSON

{
  "hex": "#370b09",
  "rgb": {
    "r": 55,
    "g": 11,
    "b": 9
  },
  "hsl": {
    "h": 2.609,
    "s": 71.875,
    "l": 12.549
  },
  "oklch": {
    "l": 0.22879,
    "c": 0.07037,
    "h": 26.9
  },
  "luminance": 0.01071
}

Semantic roles & 50–950 ramp

primary

#370B09

secondary

#277275

accent

#E7EF39

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #370B09

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

Preview Lab → · Contrast checker → · Palette generator →