#370A0C#370A0C

#370A0C is a very dark, moderate red. Relative luminance 0.011; OKLCH L 22.8% C 0.071 H 22.5°. Best body text is #FFFFFF at 17.34:1 contrast (WCAG AA passes).

Color values

HEX	#370A0C
RGB	rgb(55, 10, 12)
HSL	hsl(357, 69%, 13%)
HSV	hsv(357, 82%, 22%)
CMYK	cmyk(0%, 81.8%, 78.2%, 78.4%)
CIE-LAB	lab(9.45, 22.34, 9.72)
CIE-LCH	lch(9.45, 24.37, 23.51°)
OKLab	oklab(22.8% 0.0657 0.0272)
OKLCH	oklch(22.8% 0.071 22.5)
XYZ	xyz(1.7506, 1.0561, 0.4594)
Luminance	0.0106 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370A0C #0A3735

analogous

#370A22 #370A0C #371E0A

triadic

#370A0C #0C370A #0A0C37

tetradic

#370A0C #22370A #0A3735 #1E0A37

square

#370A0C #22370A #0A3735 #1E0A37

split-complementary

#370A0C #0A371E #0A2237

monochromatic

#1A0506 #1A0506 #370A0C #6B1317 #9F1D23

Accessibility & contrast

On white

17.34

#370A0C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#370A0C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370A0C

17.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370A0C	#FFFFFF	#000000	##FFFFFF
##370A0C	1.00	17.34	1.21	17.34
#FFFFFF	17.34	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16140C

Deuteranopia (green-blind)

#221E0B

Tritanopia (blue-blind)

#3D010B

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #370a0c;
/* rgb */ color: rgb(55, 10, 12);
/* oklch */ color: oklch(22.8% 0.071 22.5);

Tailwind

colors: {
  custom: {
    50: '#724d4c',
    500: '#370a0c',
    950: '#000000',
  },
}

SCSS

$custom: #370a0c;
$custom-light: #724d4c;
$custom-dark: #000000;

JSON

{
  "hex": "#370a0c",
  "rgb": {
    "r": 55,
    "g": 10,
    "b": 12
  },
  "hsl": {
    "h": 357.333,
    "s": 69.231,
    "l": 12.745
  },
  "oklch": {
    "l": 0.22804,
    "c": 0.07111,
    "h": 22.5
  },
  "luminance": 0.01056
}

Semantic roles & 50–950 ramp

primary

#370A0C

secondary

#287471

accent

#ECE43C

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #370A0C

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

Preview Lab → · Contrast checker → · Palette generator →