#370B03#370B03

#370B03 is a very dark, moderate red. Relative luminance 0.011; OKLCH L 22.8% C 0.072 H 34.4°. Best body text is #FFFFFF at 17.33:1 contrast (WCAG AA passes).

Color values

HEX#370B03
RGBrgb(55, 11, 3)
HSLhsl(9, 90%, 11%)
HSVhsv(9, 95%, 22%)
CMYKcmyk(0%, 80%, 94.5%, 78.4%)
CIE-LABlab(9.47, 21.28, 13.46)
CIE-LCHlch(9.47, 25.18, 32.31°)
OKLaboklab(22.77% 0.0596 0.0407)
OKLCHoklch(22.77% 0.072 34.4)
XYZxyz(1.7119, 1.0584, 0.2003)
Luminance0.0106 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#370B03 #032F37
analogous
#370315 #370B03 #372503
triadic
#370B03 #03370B #0B0337
tetradic
#370B03 #153703 #032F37 #250337
square
#370B03 #153703 #032F37 #250337
split-complementary
#370B03 #033725 #031537
monochromatic
#1D0602 #1D0602 #370B03 #711706 #AB2209

Accessibility & contrast

On white

17.33
#370B03 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.21
#370B03 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370B03
17.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##370B03#FFFFFF#000000##FFFFFF
##370B031.0017.331.2117.33
#FFFFFF17.331.0021.001.00
#0000001.2121.001.0021.00
##FFFFFF17.331.0021.001.00

Color blindness preview

Protanopia (red-blind)
#181402
Deuteranopia (green-blind)
#231E02
Tritanopia (blue-blind)
#3E0109
Achromatopsia (no color)
#1A1A1A

Design tokens & code

CSS
--color: #370b03;
/* rgb */ color: rgb(55, 11, 3);
/* oklch */ color: oklch(22.8% 0.072 34.4);
Tailwind
colors: {
  custom: {
    50: '#724d48',
    500: '#370b03',
    950: '#000000',
  },
}
SCSS
$custom: #370b03;
$custom-light: #724d48;
$custom-dark: #000000;
JSON
{
  "hex": "#370b03",
  "rgb": {
    "r": 55,
    "g": 11,
    "b": 3
  },
  "hsl": {
    "h": 9.231,
    "s": 89.655,
    "l": 11.373
  },
  "oklch": {
    "l": 0.22767,
    "c": 0.07217,
    "h": 34.4
  },
  "luminance": 0.01058
}

Semantic roles & 50–950 ramp

primary
#370B03
secondary
#1C6B7A
accent
#DEFF29
background
#F7F4F4
surface
#EDE7E6
border
#C8C3C2
text
#080100
muted
#7B7777

Preview Lab

Preview with #370B03

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

Preview Lab → · Contrast checker → · Palette generator →

#370B03 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva