#37090B#37090B

#37090B is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.7% C 0.072 H 22.8°. Best body text is #FFFFFF at 17.41:1 contrast (WCAG AA passes).

Color values

HEX	#37090B
RGB	rgb(55, 9, 11)
HSL	hsl(357, 72%, 13%)
HSV	hsv(357, 84%, 22%)
CMYK	cmyk(0%, 83.6%, 80%, 78.4%)
CIE-LAB	lab(9.26, 22.76, 9.89)
CIE-LCH	lch(9.26, 24.82, 23.48°)
OKLab	oklab(22.65% 0.0668 0.0281)
OKLCH	oklch(22.65% 0.072 22.8)
XYZ	xyz(1.7338, 1.0320, 0.4244)
Luminance	0.0103 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37090B #093735

analogous

#370922 #37090B #371E09

triadic

#37090B #0B3709 #090B37

tetradic

#37090B #223709 #093735 #1E0937

square

#37090B #223709 #093735 #1E0937

split-complementary

#37090B #09371E #092237

monochromatic

#1A0405 #1A0405 #37090B #6C1216 #A01A20

Accessibility & contrast

On white

17.41

#37090B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#37090B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37090B

17.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37090B	#FFFFFF	#000000	##FFFFFF
##37090B	1.00	17.41	1.21	17.41
#FFFFFF	17.41	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16140B

Deuteranopia (green-blind)

#221E0A

Tritanopia (blue-blind)

#3D000A

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #37090b;
/* rgb */ color: rgb(55, 9, 11);
/* oklch */ color: oklch(22.7% 0.072 22.8);

Tailwind

colors: {
  custom: {
    50: '#724c4b',
    500: '#37090b',
    950: '#000000',
  },
}

SCSS

$custom: #37090b;
$custom-light: #724c4b;
$custom-dark: #000000;

JSON

{
  "hex": "#37090b",
  "rgb": {
    "r": 55,
    "g": 9,
    "b": 11
  },
  "hsl": {
    "h": 357.391,
    "s": 71.875,
    "l": 12.549
  },
  "oklch": {
    "l": 0.22652,
    "c": 0.07245,
    "h": 22.8
  },
  "luminance": 0.01032
}

Semantic roles & 50–950 ramp

primary

#37090B

secondary

#277572

accent

#EFE739

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #37090B

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

Preview Lab → · Contrast checker → · Palette generator →