#370D0D#370D0D

#370D0D is a very dark, moderate red. Relative luminance 0.011; OKLCH L 23.2% C 0.067 H 24.0°. Best body text is #FFFFFF at 17.13:1 contrast (WCAG AA passes).

Color values

HEX	#370D0D
RGB	rgb(55, 13, 13)
HSL	hsl(0, 62%, 13%)
HSV	hsv(0, 76%, 22%)
CMYK	cmyk(0%, 76.4%, 76.4%, 78.4%)
CIE-LAB	lab(10.03, 20.90, 10.07)
CIE-LCH	lch(10.03, 23.20, 25.73°)
OKLab	oklab(23.24% 0.0614 0.0273)
OKLCH	oklch(23.24% 0.067 24)
XYZ	xyz(1.7923, 1.1294, 0.5043)
Luminance	0.0113 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370D0D #0D3737

analogous

#370D22 #370D0D #37220D

triadic

#370D0D #0D370D #0D0D37

tetradic

#370D0D #22370D #0D3737 #220D37

square

#370D0D #22370D #0D3737 #220D37

split-complementary

#370D0D #0D3722 #0D2237

monochromatic

#190606 #190606 #370D0D #681919 #9A2424

Accessibility & contrast

On white

17.13

#370D0D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#370D0D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370D0D

17.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370D0D	#FFFFFF	#000000	##FFFFFF
##370D0D	1.00	17.13	1.23	17.13
#FFFFFF	17.13	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18160D

Deuteranopia (green-blind)

#231F0C

Tritanopia (blue-blind)

#3D040D

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #370d0d;
/* rgb */ color: rgb(55, 13, 13);
/* oklch */ color: oklch(23.2% 0.067 24.0);

Tailwind

colors: {
  custom: {
    50: '#724e4c',
    500: '#370d0d',
    950: '#000000',
  },
}

SCSS

$custom: #370d0d;
$custom-light: #724e4c;
$custom-dark: #000000;

JSON

{
  "hex": "#370d0d",
  "rgb": {
    "r": 55,
    "g": 13,
    "b": 13
  },
  "hsl": {
    "h": 0,
    "s": 61.765,
    "l": 13.333
  },
  "oklch": {
    "l": 0.23241,
    "c": 0.06718,
    "h": 24
  },
  "luminance": 0.01129
}

Semantic roles & 50–950 ramp

primary

#370D0D

secondary

#2D7272

accent

#E5E543

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080201

muted

#7B7877

Preview Lab

Preview with #370D0D

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

Preview Lab → · Contrast checker → · Palette generator →