#37403F#37403F

#37403F is a dark, near-neutral grey. Relative luminance 0.048; OKLCH L 36.3% C 0.012 H 188.5°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#37403F
RGB	rgb(55, 64, 63)
HSL	hsl(173, 8%, 23%)
HSV	hsv(173, 14%, 25%)
CMYK	cmyk(14.1%, 0%, 1.6%, 74.9%)
CIE-LAB	lab(26.27, -3.95, -0.64)
CIE-LCH	lch(26.27, 4.00, 189.28°)
OKLab	oklab(36.29% -0.0119 -0.0018)
OKLCH	oklch(36.29% 0.012 188.5)
XYZ	xyz(4.3059, 4.8378, 5.4086)
Luminance	0.0484 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37403F #403738

analogous

#37403A #37403F #373C40

triadic

#37403F #3F3740 #403F37

tetradic

#37403F #3A3740 #403738 #3C4037

square

#37403F #3A3740 #403738 #3C4037

split-complementary

#37403F #40373C #403A37

monochromatic

#0E1010 #1B1F1F #37403F #53615F #708280

Accessibility & contrast

On white

10.67

#37403F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#37403F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37403F

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37403F	#FFFFFF	#000000	##FFFFFF
##37403F	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3F3F

Deuteranopia (green-blind)

#3D3E3F

Tritanopia (blue-blind)

#354140

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #37403f;
/* rgb */ color: rgb(55, 64, 63);
/* oklch */ color: oklch(36.3% 0.012 188.5);

Tailwind

colors: {
  custom: {
    50: '#6d7474',
    500: '#37403f',
    950: '#000000',
  },
}

SCSS

$custom: #37403f;
$custom-light: #6d7474;
$custom-dark: #000000;

JSON

{
  "hex": "#37403f",
  "rgb": {
    "r": 55,
    "g": 64,
    "b": 63
  },
  "hsl": {
    "h": 173.333,
    "s": 7.563,
    "l": 23.333
  },
  "oklch": {
    "l": 0.36289,
    "c": 0.01203,
    "h": 188.5
  },
  "luminance": 0.04838
}

Semantic roles & 50–950 ramp

primary

#37403F

secondary

#6F6465

accent

#777EB1

background

#F6F7F7

surface

#EBEDED

border

#C6C8C8

text

#070808

muted

#7A7B7B

Preview Lab

Preview with #37403F

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

Preview Lab → · Contrast checker → · Palette generator →