#370F0D#370F0D

#370F0D is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.5% C 0.065 H 26.1°. Best body text is #FFFFFF at 16.98:1 contrast (WCAG AA passes).

Color values

HEX	#370F0D
RGB	rgb(55, 15, 13)
HSL	hsl(3, 62%, 13%)
HSV	hsv(3, 76%, 22%)
CMYK	cmyk(0%, 72.7%, 76.4%, 78.4%)
CIE-LAB	lab(10.43, 19.81, 10.65)
CIE-LCH	lch(10.43, 22.49, 28.25°)
OKLab	oklab(23.55% 0.058 0.0284)
OKLCH	oklch(23.55% 0.065 26.1)
XYZ	xyz(1.8192, 1.1832, 0.5133)
Luminance	0.0118 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370F0D #0D3537

analogous

#370D20 #370F0D #37240D

triadic

#370F0D #0D370F #0F0D37

tetradic

#370F0D #20370D #0D3537 #240D37

square

#370F0D #20370D #0D3537 #240D37

split-complementary

#370F0D #0D3724 #0D2037

monochromatic

#190706 #190706 #370F0D #681C19 #9A2A24

Accessibility & contrast

On white

16.98

#370F0D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#370F0D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370F0D

16.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370F0D	#FFFFFF	#000000	##FFFFFF
##370F0D	1.00	16.98	1.24	16.98
#FFFFFF	16.98	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19170D

Deuteranopia (green-blind)

#24200C

Tritanopia (blue-blind)

#3D070F

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #370f0d;
/* rgb */ color: rgb(55, 15, 13);
/* oklch */ color: oklch(23.5% 0.065 26.1);

Tailwind

colors: {
  custom: {
    50: '#714f4c',
    500: '#370f0d',
    950: '#000000',
  },
}

SCSS

$custom: #370f0d;
$custom-light: #714f4c;
$custom-dark: #000000;

JSON

{
  "hex": "#370f0d",
  "rgb": {
    "r": 55,
    "g": 15,
    "b": 13
  },
  "hsl": {
    "h": 2.857,
    "s": 61.765,
    "l": 13.333
  },
  "oklch": {
    "l": 0.23546,
    "c": 0.06454,
    "h": 26.1
  },
  "luminance": 0.01183
}

Semantic roles & 50–950 ramp

primary

#370F0D

secondary

#2D6F72

accent

#DDE543

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080201

muted

#7B7877

Preview Lab

Preview with #370F0D

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

Preview Lab → · Contrast checker → · Palette generator →