#370B05#370B05

#370B05 is a very dark, moderate red. Relative luminance 0.011; OKLCH L 22.8% C 0.071 H 31.8°. Best body text is #FFFFFF at 17.32:1 contrast (WCAG AA passes).

Color values

HEX	#370B05
RGB	rgb(55, 11, 5)
HSL	hsl(7, 83%, 12%)
HSV	hsv(7, 91%, 22%)
CMYK	cmyk(0%, 80%, 90.9%, 78.4%)
CIE-LAB	lab(9.50, 21.41, 12.70)
CIE-LCH	lch(9.50, 24.89, 30.67°)
OKLab	oklab(22.8% 0.0607 0.0376)
OKLCH	oklch(22.8% 0.071 31.8)
XYZ	xyz(1.7228, 1.0628, 0.2580)
Luminance	0.0106 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370B05 #053137

analogous

#370518 #370B05 #372405

triadic

#370B05 #05370B #0B0537

tetradic

#370B05 #183705 #053137 #240537

square

#370B05 #183705 #053137 #240537

split-complementary

#370B05 #053724 #051837

monochromatic

#1C0603 #1C0603 #370B05 #6F160A #A7210F

Accessibility & contrast

On white

17.32

#370B05 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#370B05 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370B05

17.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370B05	#FFFFFF	#000000	##FFFFFF
##370B05	1.00	17.32	1.21	17.32
#FFFFFF	17.32	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181404

Deuteranopia (green-blind)

#231E04

Tritanopia (blue-blind)

#3E010A

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #370b05;
/* rgb */ color: rgb(55, 11, 5);
/* oklch */ color: oklch(22.8% 0.071 31.8);

Tailwind

colors: {
  custom: {
    50: '#724d49',
    500: '#370b05',
    950: '#000000',
  },
}

SCSS

$custom: #370b05;
$custom-light: #724d49;
$custom-dark: #000000;

JSON

{
  "hex": "#370b05",
  "rgb": {
    "r": 55,
    "g": 11,
    "b": 5
  },
  "hsl": {
    "h": 7.2,
    "s": 83.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.22804,
    "c": 0.07143,
    "h": 31.8
  },
  "luminance": 0.01063
}

Semantic roles & 50–950 ramp

primary

#370B05

secondary

#206E78

accent

#E1FA2E

background

#F7F4F4

surface

#EDE7E6

border

#C8C3C2

text

#080100

muted

#7B7777

Preview Lab

Preview with #370B05

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

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