#370B15#370B15

#370B15 is a very dark, moderate red. Relative luminance 0.011; OKLCH L 23.2% C 0.070 H 11.0°. Best body text is #FFFFFF at 17.20:1 contrast (WCAG AA passes).

Color values

HEX	#370B15
RGB	rgb(55, 11, 21)
HSL	hsl(346, 67%, 13%)
HSV	hsv(346, 80%, 22%)
CMYK	cmyk(0%, 80%, 61.8%, 78.4%)
CIE-LAB	lab(9.85, 22.63, 5.15)
CIE-LCH	lch(9.85, 23.21, 12.83°)
OKLab	oklab(23.17% 0.0685 0.0133)
OKLCH	oklch(23.17% 0.07 11)
XYZ	xyz(1.8307, 1.1060, 0.8264)
Luminance	0.0111 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370B15 #0B372D

analogous

#370B2B #370B15 #37170B

triadic

#370B15 #15370B #0B1537

tetradic

#370B15 #2B370B #0B372D #170B37

square

#370B15 #2B370B #0B372D #170B37

split-complementary

#370B15 #0B3717 #0B2B37

monochromatic

#1A050A #1A050A #370B15 #6A1528 #9D1F3C

Accessibility & contrast

On white

17.20

#370B15 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#370B15 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370B15

17.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370B15	#FFFFFF	#000000	##FFFFFF
##370B15	1.00	17.20	1.22	17.20
#FFFFFF	17.20	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161515

Deuteranopia (green-blind)

#211E14

Tritanopia (blue-blind)

#3D040F

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #370b15;
/* rgb */ color: rgb(55, 11, 21);
/* oklch */ color: oklch(23.2% 0.070 11.0);

Tailwind

colors: {
  custom: {
    50: '#714d52',
    500: '#370b15',
    950: '#000000',
  },
}

SCSS

$custom: #370b15;
$custom-light: #714d52;
$custom-dark: #000000;

JSON

{
  "hex": "#370b15",
  "rgb": {
    "r": 55,
    "g": 11,
    "b": 21
  },
  "hsl": {
    "h": 346.364,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.23169,
    "c": 0.06983,
    "h": 11
  },
  "luminance": 0.01106
}

Semantic roles & 50–950 ramp

primary

#370B15

secondary

#2A7463

accent

#EAC33E

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080102

muted

#7B7778

Preview Lab

Preview with #370B15

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

Preview Lab → · Contrast checker → · Palette generator →