#370B04#370B04

#370B04 is a very dark, moderate red. Relative luminance 0.011; OKLCH L 22.8% C 0.072 H 33.0°. Best body text is #FFFFFF at 17.33:1 contrast (WCAG AA passes).

Color values

HEX	#370B04
RGB	rgb(55, 11, 4)
HSL	hsl(8, 86%, 12%)
HSV	hsv(8, 93%, 22%)
CMYK	cmyk(0%, 80%, 92.7%, 78.4%)
CIE-LAB	lab(9.49, 21.35, 13.08)
CIE-LCH	lch(9.49, 25.03, 31.50°)
OKLab	oklab(22.79% 0.0602 0.0391)
OKLCH	oklch(22.79% 0.072 33)
XYZ	xyz(1.7173, 1.0606, 0.2291)
Luminance	0.0106 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370B04 #043037

analogous

#370417 #370B04 #372504

triadic

#370B04 #04370B #0B0437

tetradic

#370B04 #173704 #043037 #250437

square

#370B04 #173704 #043037 #250437

split-complementary

#370B04 #043725 #041737

monochromatic

#1D0602 #1D0602 #370B04 #701608 #A9220C

Accessibility & contrast

On white

17.33

#370B04 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#370B04 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370B04

17.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370B04	#FFFFFF	#000000	##FFFFFF
##370B04	1.00	17.33	1.21	17.33
#FFFFFF	17.33	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181403

Deuteranopia (green-blind)

#231E03

Tritanopia (blue-blind)

#3E0109

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #370b04;
/* rgb */ color: rgb(55, 11, 4);
/* oklch */ color: oklch(22.8% 0.072 33.0);

Tailwind

colors: {
  custom: {
    50: '#724d48',
    500: '#370b04',
    950: '#000000',
  },
}

SCSS

$custom: #370b04;
$custom-light: #724d48;
$custom-dark: #000000;

JSON

{
  "hex": "#370b04",
  "rgb": {
    "r": 55,
    "g": 11,
    "b": 4
  },
  "hsl": {
    "h": 8.235,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.22785,
    "c": 0.07178,
    "h": 33
  },
  "luminance": 0.0106
}

Semantic roles & 50–950 ramp

primary

#370B04

secondary

#1E6D79

accent

#E0FD2B

background

#F7F4F4

surface

#EDE7E6

border

#C8C3C2

text

#080100

muted

#7B7777

Preview Lab

Preview with #370B04

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

Preview Lab → · Contrast checker → · Palette generator →