#37090A#37090A

#37090A is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.6% C 0.073 H 24.0°. Best body text is #FFFFFF at 17.41:1 contrast (WCAG AA passes).

Color values

HEX	#37090A
RGB	rgb(55, 9, 10)
HSL	hsl(359, 72%, 13%)
HSV	hsv(359, 84%, 22%)
CMYK	cmyk(0%, 83.6%, 81.8%, 78.4%)
CIE-LAB	lab(9.24, 22.70, 10.28)
CIE-LCH	lch(9.24, 24.92, 24.36°)
OKLab	oklab(22.63% 0.0663 0.0295)
OKLCH	oklch(22.63% 0.073 24)
XYZ	xyz(1.7282, 1.0298, 0.3949)
Luminance	0.0103 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37090A #093736

analogous

#370921 #37090A #371F09

triadic

#37090A #0A3709 #090A37

tetradic

#37090A #213709 #093736 #1F0937

square

#37090A #213709 #093736 #1F0937

split-complementary

#37090A #09371F #092137

monochromatic

#1A0405 #1A0405 #37090A #6C1214 #A01A1D

Accessibility & contrast

On white

17.41

#37090A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#37090A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37090A

17.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37090A	#FFFFFF	#000000	##FFFFFF
##37090A	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)

#16140A

Deuteranopia (green-blind)

#221E09

Tritanopia (blue-blind)

#3D000A

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #37090a;
/* rgb */ color: rgb(55, 9, 10);
/* oklch */ color: oklch(22.6% 0.073 24.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#37090a",
  "rgb": {
    "r": 55,
    "g": 9,
    "b": 10
  },
  "hsl": {
    "h": 358.696,
    "s": 71.875,
    "l": 12.549
  },
  "oklch": {
    "l": 0.22633,
    "c": 0.07258,
    "h": 24
  },
  "luminance": 0.0103
}

Semantic roles & 50–950 ramp

primary

#37090A

secondary

#277573

accent

#EFEB39

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #37090A

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

Preview Lab → · Contrast checker → · Palette generator →