#370B0F#370B0F

#370B0F is a very dark, moderate red. Relative luminance 0.011; OKLCH L 23.0% C 0.070 H 19.5°. Best body text is #FFFFFF at 17.25:1 contrast (WCAG AA passes).

Color values

HEX	#370B0F
RGB	rgb(55, 11, 15)
HSL	hsl(355, 67%, 13%)
HSV	hsv(355, 80%, 22%)
CMYK	cmyk(0%, 80%, 72.7%, 78.4%)
CIE-LAB	lab(9.69, 22.08, 8.59)
CIE-LCH	lch(9.69, 23.69, 21.25°)
OKLab	oklab(23% 0.0656 0.0232)
OKLCH	oklch(23% 0.07 19.5)
XYZ	xyz(1.7816, 1.0863, 0.5677)
Luminance	0.0109 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370B0F #0B3733

analogous

#370B25 #370B0F #371D0B

triadic

#370B0F #0F370B #0B0F37

tetradic

#370B0F #25370B #0B3733 #1D0B37

square

#370B0F #25370B #0B3733 #1D0B37

split-complementary

#370B0F #0B371D #0B2537

monochromatic

#1A0507 #1A0507 #370B0F #6A151D #9D1F2B

Accessibility & contrast

On white

17.25

#370B0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#370B0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370B0F

17.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370B0F	#FFFFFF	#000000	##FFFFFF
##370B0F	1.00	17.25	1.22	17.25
#FFFFFF	17.25	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17150F

Deuteranopia (green-blind)

#221E0E

Tritanopia (blue-blind)

#3D030D

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #370b0f;
/* rgb */ color: rgb(55, 11, 15);
/* oklch */ color: oklch(23.0% 0.070 19.5);

Tailwind

colors: {
  custom: {
    50: '#724d4e',
    500: '#370b0f',
    950: '#000000',
  },
}

SCSS

$custom: #370b0f;
$custom-light: #724d4e;
$custom-dark: #000000;

JSON

{
  "hex": "#370b0f",
  "rgb": {
    "r": 55,
    "g": 11,
    "b": 15
  },
  "hsl": {
    "h": 354.545,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.23004,
    "c": 0.06959,
    "h": 19.5
  },
  "luminance": 0.01086
}

Semantic roles & 50–950 ramp

primary

#370B0F

secondary

#2A746D

accent

#EADA3E

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #370B0F

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

Preview Lab → · Contrast checker → · Palette generator →