#370404#370404

#370404 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.8% C 0.080 H 27.0°. Best body text is #FFFFFF at 17.77:1 contrast (WCAG AA passes).

Color values

HEX	#370404
RGB	rgb(55, 4, 4)
HSL	hsl(0, 86%, 12%)
HSV	hsv(0, 93%, 22%)
CMYK	cmyk(0%, 92.7%, 92.7%, 78.4%)
CIE-LAB	lab(8.20, 24.92, 11.23)
CIE-LCH	lch(8.20, 27.33, 24.25°)
OKLab	oklab(21.83% 0.0713 0.0364)
OKLCH	oklch(21.83% 0.08 27)
XYZ	xyz(1.6411, 0.9081, 0.2037)
Luminance	0.0091 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370404 #043737

analogous

#37041E #370404 #371E04

triadic

#370404 #043704 #040437

tetradic

#370404 #1E3704 #043737 #1E0437

square

#370404 #1E3704 #043737 #1E0437

split-complementary

#370404 #04371E #041E37

monochromatic

#1D0202 #1D0202 #370404 #700808 #A90C0C

Accessibility & contrast

On white

17.77

#370404 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#370404 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370404

17.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370404	#FFFFFF	#000000	##FFFFFF
##370404	1.00	17.77	1.18	17.77
#FFFFFF	17.77	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#141104

Deuteranopia (green-blind)

#201C03

Tritanopia (blue-blind)

#3E0005

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #370404;
/* rgb */ color: rgb(55, 4, 4);
/* oklch */ color: oklch(21.8% 0.080 27.0);

Tailwind

colors: {
  custom: {
    50: '#724948',
    500: '#370404',
    950: '#000000',
  },
}

SCSS

$custom: #370404;
$custom-light: #724948;
$custom-dark: #000000;

JSON

{
  "hex": "#370404",
  "rgb": {
    "r": 55,
    "g": 4,
    "b": 4
  },
  "hsl": {
    "h": 0,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.21827,
    "c": 0.08008,
    "h": 27
  },
  "luminance": 0.00908
}

Semantic roles & 50–950 ramp

primary

#370404

secondary

#1E7979

accent

#FDFD2B

background

#F7F4F4

surface

#EDE7E6

border

#C8C3C2

text

#090100

muted

#7B7777

Preview Lab

Preview with #370404

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

Preview Lab → · Contrast checker → · Palette generator →