#37070B#37070B

#37070B is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.4% C 0.075 H 21.2°. Best body text is #FFFFFF at 17.54:1 contrast (WCAG AA passes).

Color values

HEX	#37070B
RGB	rgb(55, 7, 11)
HSL	hsl(355, 77%, 12%)
HSV	hsv(355, 87%, 22%)
CMYK	cmyk(0%, 87.3%, 80%, 78.4%)
CIE-LAB	lab(8.90, 23.76, 9.37)
CIE-LCH	lch(8.90, 25.54, 21.53°)
OKLab	oklab(22.39% 0.0699 0.0272)
OKLCH	oklch(22.39% 0.075 21.2)
XYZ	xyz(1.7121, 0.9886, 0.4172)
Luminance	0.0099 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37070B #073733

analogous

#370723 #37070B #371B07

triadic

#37070B #0B3707 #070B37

tetradic

#37070B #233707 #073733 #1B0737

square

#37070B #233707 #073733 #1B0737

split-complementary

#37070B #07371B #072337

monochromatic

#1B0305 #1B0305 #37070B #6D0E16 #A41521

Accessibility & contrast

On white

17.54

#37070B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#37070B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37070B

17.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37070B	#FFFFFF	#000000	##FFFFFF
##37070B	1.00	17.54	1.20	17.54
#FFFFFF	17.54	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15130B

Deuteranopia (green-blind)

#211D09

Tritanopia (blue-blind)

#3D0009

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #37070b;
/* rgb */ color: rgb(55, 7, 11);
/* oklch */ color: oklch(22.4% 0.075 21.2);

Tailwind

colors: {
  custom: {
    50: '#724b4b',
    500: '#37070b',
    950: '#000000',
  },
}

SCSS

$custom: #37070b;
$custom-light: #724b4b;
$custom-dark: #000000;

JSON

{
  "hex": "#37070b",
  "rgb": {
    "r": 55,
    "g": 7,
    "b": 11
  },
  "hsl": {
    "h": 355,
    "s": 77.419,
    "l": 12.157
  },
  "oklch": {
    "l": 0.22385,
    "c": 0.07503,
    "h": 21.2
  },
  "luminance": 0.00988
}

Semantic roles & 50–950 ramp

primary

#37070B

secondary

#237770

accent

#F4E434

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #37070B

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

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