#370B13#370B13

#370B13 is a very dark, moderate red. Relative luminance 0.011; OKLCH L 23.1% C 0.070 H 13.9°. Best body text is #FFFFFF at 17.22:1 contrast (WCAG AA passes).

Color values

HEX	#370B13
RGB	rgb(55, 11, 19)
HSL	hsl(349, 67%, 13%)
HSV	hsv(349, 80%, 22%)
CMYK	cmyk(0%, 80%, 65.5%, 78.4%)
CIE-LAB	lab(9.79, 22.43, 6.40)
CIE-LCH	lch(9.79, 23.33, 15.92°)
OKLab	oklab(23.11% 0.0676 0.0167)
OKLCH	oklch(23.11% 0.07 13.9)
XYZ	xyz(1.8129, 1.0988, 0.7326)
Luminance	0.0110 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370B13 #0B372F

analogous

#370B29 #370B13 #37190B

triadic

#370B13 #13370B #0B1337

tetradic

#370B13 #29370B #0B372F #190B37

square

#370B13 #29370B #0B372F #190B37

split-complementary

#370B13 #0B3719 #0B2937

monochromatic

#1A0509 #1A0509 #370B13 #6A1525 #9D1F36

Accessibility & contrast

On white

17.22

#370B13 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#370B13 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370B13

17.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370B13	#FFFFFF	#000000	##FFFFFF
##370B13	1.00	17.22	1.22	17.22
#FFFFFF	17.22	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161513

Deuteranopia (green-blind)

#211E12

Tritanopia (blue-blind)

#3D040E

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #370b13;
/* rgb */ color: rgb(55, 11, 19);
/* oklch */ color: oklch(23.1% 0.070 13.9);

Tailwind

colors: {
  custom: {
    50: '#714d50',
    500: '#370b13',
    950: '#000000',
  },
}

SCSS

$custom: #370b13;
$custom-light: #714d50;
$custom-dark: #000000;

JSON

{
  "hex": "#370b13",
  "rgb": {
    "r": 55,
    "g": 11,
    "b": 19
  },
  "hsl": {
    "h": 349.091,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.23109,
    "c": 0.06961,
    "h": 13.9
  },
  "luminance": 0.01099
}

Semantic roles & 50–950 ramp

primary

#370B13

secondary

#2A7466

accent

#EACA3E

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080102

muted

#7B7778

Preview Lab

Preview with #370B13

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

Preview Lab → · Contrast checker → · Palette generator →