#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
RGBrgb(55, 4, 4)
HSLhsl(0, 86%, 12%)
HSVhsv(0, 93%, 22%)
CMYKcmyk(0%, 92.7%, 92.7%, 78.4%)
CIE-LABlab(8.20, 24.92, 11.23)
CIE-LCHlch(8.20, 27.33, 24.25°)
OKLaboklab(21.83% 0.0713 0.0364)
OKLCHoklch(21.83% 0.08 27)
XYZxyz(1.6411, 0.9081, 0.2037)
Luminance0.0091 (WCAG relative)
Temperaturewarm
Familyred

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
##3704041.0017.771.1817.77
#FFFFFF17.771.0021.001.00
#0000001.1821.001.0021.00
##FFFFFF17.771.0021.001.00

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 →

#370404 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva