#370509#370509

#370509 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 22.1% C 0.078 H 21.9°. Best body text is #FFFFFF at 17.68:1 contrast (WCAG AA passes).

Color values

HEX	#370509
RGB	rgb(55, 5, 9)
HSL	hsl(355, 83%, 12%)
HSV	hsv(355, 91%, 22%)
CMYK	cmyk(0%, 90.9%, 83.6%, 78.4%)
CIE-LAB	lab(8.49, 24.67, 9.61)
CIE-LCH	lch(8.49, 26.48, 21.27°)
OKLab	oklab(22.07% 0.0723 0.029)
OKLCH	oklch(22.07% 0.078 21.9)
XYZ	xyz(1.6793, 0.9408, 0.3516)
Luminance	0.0094 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370509 #053733

analogous

#370522 #370509 #371A05

triadic

#370509 #093705 #050937

tetradic

#370509 #223705 #053733 #1A0537

square

#370509 #223705 #053733 #1A0537

split-complementary

#370509 #05371A #052237

monochromatic

#1C0305 #1C0305 #370509 #6F0A12 #A70F1B

Accessibility & contrast

On white

17.68

#370509 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#370509 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370509

17.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370509	#FFFFFF	#000000	##FFFFFF
##370509	1.00	17.68	1.19	17.68
#FFFFFF	17.68	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#141209

Deuteranopia (green-blind)

#201C07

Tritanopia (blue-blind)

#3D0007

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #370509;
/* rgb */ color: rgb(55, 5, 9);
/* oklch */ color: oklch(22.1% 0.078 21.9);

Tailwind

colors: {
  custom: {
    50: '#724a4a',
    500: '#370509',
    950: '#000000',
  },
}

SCSS

$custom: #370509;
$custom-light: #724a4a;
$custom-dark: #000000;

JSON

{
  "hex": "#370509",
  "rgb": {
    "r": 55,
    "g": 5,
    "b": 9
  },
  "hsl": {
    "h": 355.2,
    "s": 83.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.2207,
    "c": 0.07793,
    "h": 21.9
  },
  "luminance": 0.0094
}

Semantic roles & 50–950 ramp

primary

#370509

secondary

#207871

accent

#FAE92E

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #370509

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

Preview Lab → · Contrast checker → · Palette generator →