#370B11#370B11

#370B11 is a very dark, moderate red. Relative luminance 0.011; OKLCH L 23.1% C 0.070 H 16.7°. Best body text is #FFFFFF at 17.24:1 contrast (WCAG AA passes).

Color values

HEX	#370B11
RGB	rgb(55, 11, 17)
HSL	hsl(352, 67%, 13%)
HSV	hsv(352, 80%, 22%)
CMYK	cmyk(0%, 80%, 69.1%, 78.4%)
CIE-LAB	lab(9.74, 22.25, 7.54)
CIE-LCH	lch(9.74, 23.50, 18.73°)
OKLab	oklab(23.05% 0.0666 0.02)
OKLCH	oklch(23.05% 0.07 16.7)
XYZ	xyz(1.7966, 1.0923, 0.6464)
Luminance	0.0109 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370B11 #0B3731

analogous

#370B27 #370B11 #371B0B

triadic

#370B11 #11370B #0B1137

tetradic

#370B11 #27370B #0B3731 #1B0B37

square

#370B11 #27370B #0B3731 #1B0B37

split-complementary

#370B11 #0B371B #0B2737

monochromatic

#1A0508 #1A0508 #370B11 #6A1521 #9D1F31

Accessibility & contrast

On white

17.24

#370B11 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#370B11 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370B11

17.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370B11	#FFFFFF	#000000	##FFFFFF
##370B11	1.00	17.24	1.22	17.24
#FFFFFF	17.24	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161511

Deuteranopia (green-blind)

#221E10

Tritanopia (blue-blind)

#3D030D

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #370b11;
/* rgb */ color: rgb(55, 11, 17);
/* oklch */ color: oklch(23.1% 0.070 16.7);

Tailwind

colors: {
  custom: {
    50: '#714d4f',
    500: '#370b11',
    950: '#000000',
  },
}

SCSS

$custom: #370b11;
$custom-light: #714d4f;
$custom-dark: #000000;

JSON

{
  "hex": "#370b11",
  "rgb": {
    "r": 55,
    "g": 11,
    "b": 17
  },
  "hsl": {
    "h": 351.818,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.23054,
    "c": 0.06953,
    "h": 16.7
  },
  "luminance": 0.01092
}

Semantic roles & 50–950 ramp

primary

#370B11

secondary

#2A746A

accent

#EAD23E

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #370B11

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

Preview Lab → · Contrast checker → · Palette generator →