#37403D#37403D

#37403D is a dark, near-neutral grey. Relative luminance 0.048; OKLCH L 36.2% C 0.013 H 173.5°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#37403D
RGB	rgb(55, 64, 61)
HSL	hsl(160, 8%, 23%)
HSV	hsv(160, 14%, 25%)
CMYK	cmyk(14.1%, 0%, 4.7%, 74.9%)
CIE-LAB	lab(26.20, -4.43, 0.58)
CIE-LCH	lch(26.20, 4.47, 172.56°)
OKLab	oklab(36.22% -0.0129 0.0015)
OKLCH	oklch(36.22% 0.013 173.5)
XYZ	xyz(4.2511, 4.8159, 5.1196)
Luminance	0.0482 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37403D #40373A

analogous

#374038 #37403D #373E40

triadic

#37403D #3D3740 #403D37

tetradic

#37403D #383740 #40373A #3E4037

square

#37403D #383740 #40373A #3E4037

split-complementary

#37403D #40373E #403837

monochromatic

#0E1010 #1B1F1E #37403D #53615C #70827C

Accessibility & contrast

On white

10.70

#37403D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#37403D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37403D

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37403D	#FFFFFF	#000000	##FFFFFF
##37403D	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3F3D

Deuteranopia (green-blind)

#3E3D3D

Tritanopia (blue-blind)

#35403F

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #37403d;
/* rgb */ color: rgb(55, 64, 61);
/* oklch */ color: oklch(36.2% 0.013 173.5);

Tailwind

colors: {
  custom: {
    50: '#6d7472',
    500: '#37403d',
    950: '#000000',
  },
}

SCSS

$custom: #37403d;
$custom-light: #6d7472;
$custom-dark: #000000;

JSON

{
  "hex": "#37403d",
  "rgb": {
    "r": 55,
    "g": 64,
    "b": 61
  },
  "hsl": {
    "h": 160,
    "s": 7.563,
    "l": 23.333
  },
  "oklch": {
    "l": 0.36217,
    "c": 0.01296,
    "h": 173.5
  },
  "luminance": 0.04816
}

Semantic roles & 50–950 ramp

primary

#37403D

secondary

#6F6468

accent

#778AB1

background

#F6F7F6

surface

#EBEDEC

border

#C6C8C7

text

#070808

muted

#7A7B7B

Preview Lab

Preview with #37403D

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

Preview Lab → · Contrast checker → · Palette generator →