#370C0C#370C0C

#370C0C is a very dark, moderate red. Relative luminance 0.011; OKLCH L 23.1% C 0.069 H 24.2°. Best body text is #FFFFFF at 17.21:1 contrast (WCAG AA passes).

Color values

HEX	#370C0C
RGB	rgb(55, 12, 12)
HSL	hsl(0, 64%, 13%)
HSV	hsv(0, 78%, 22%)
CMYK	cmyk(0%, 78.2%, 78.2%, 78.4%)
CIE-LAB	lab(9.81, 21.35, 10.24)
CIE-LCH	lch(9.81, 23.68, 25.62°)
OKLab	oklab(23.08% 0.0626 0.0282)
OKLCH	oklch(23.08% 0.069 24.2)
XYZ	xyz(1.7736, 1.1020, 0.4671)
Luminance	0.0110 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370C0C #0C3737

analogous

#370C21 #370C0C #37210C

triadic

#370C0C #0C370C #0C0C37

tetradic

#370C0C #21370C #0C3737 #210C37

square

#370C0C #21370C #0C3737 #210C37

split-complementary

#370C0C #0C3721 #0C2137

monochromatic

#190505 #190505 #370C0C #691717 #9B2222

Accessibility & contrast

On white

17.21

#370C0C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#370C0C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370C0C

17.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370C0C	#FFFFFF	#000000	##FFFFFF
##370C0C	1.00	17.21	1.22	17.21
#FFFFFF	17.21	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18150C

Deuteranopia (green-blind)

#221F0B

Tritanopia (blue-blind)

#3D030C

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #370c0c;
/* rgb */ color: rgb(55, 12, 12);
/* oklch */ color: oklch(23.1% 0.069 24.2);

Tailwind

colors: {
  custom: {
    50: '#724e4c',
    500: '#370c0c',
    950: '#000000',
  },
}

SCSS

$custom: #370c0c;
$custom-light: #724e4c;
$custom-dark: #000000;

JSON

{
  "hex": "#370c0c",
  "rgb": {
    "r": 55,
    "g": 12,
    "b": 12
  },
  "hsl": {
    "h": 0,
    "s": 64.179,
    "l": 13.137
  },
  "oklch": {
    "l": 0.23076,
    "c": 0.06862,
    "h": 24.2
  },
  "luminance": 0.01102
}

Semantic roles & 50–950 ramp

primary

#370C0C

secondary

#2C7373

accent

#E7E741

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #370C0C

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

Preview Lab → · Contrast checker → · Palette generator →