#403F37#403F37

#403F37 is a dark, near-neutral grey. Relative luminance 0.049; OKLCH L 36.6% C 0.013 H 101.2°. Best body text is #FFFFFF at 10.58:1 contrast (WCAG AA passes).

Color values

HEX	#403F37
RGB	rgb(64, 63, 55)
HSL	hsl(53, 8%, 23%)
HSV	hsv(53, 14%, 25%)
CMYK	cmyk(0%, 1.6%, 14.1%, 74.9%)
CIE-LAB	lab(26.51, -1.26, 5.06)
CIE-LCH	lch(26.51, 5.22, 103.96°)
OKLab	oklab(36.6% -0.0026 0.0132)
OKLCH	oklch(36.6% 0.013 101.2)
XYZ	xyz(4.5814, 4.9209, 4.3222)
Luminance	0.0492 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F37 #373840

analogous

#403A37 #403F37 #3C4037

triadic

#403F37 #37403F #3F3740

tetradic

#403F37 #37403A #373840 #40373C

square

#403F37 #37403A #373840 #40373C

split-complementary

#403F37 #373C40 #3A3740

monochromatic

#10100E #1F1F1B #403F37 #615F53 #828070

Accessibility & contrast

On white

10.58

#403F37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#403F37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F37

10.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F37	#FFFFFF	#000000	##FFFFFF
##403F37	1.00	10.58	1.98	10.58
#FFFFFF	10.58	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#413E37

Deuteranopia (green-blind)

#413F37

Tritanopia (blue-blind)

#423E3D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #403f37;
/* rgb */ color: rgb(64, 63, 55);
/* oklch */ color: oklch(36.6% 0.013 101.2);

Tailwind

colors: {
  custom: {
    50: '#74746d',
    500: '#403f37',
    950: '#000000',
  },
}

SCSS

$custom: #403f37;
$custom-light: #74746d;
$custom-dark: #000000;

JSON

{
  "hex": "#403f37",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 55
  },
  "hsl": {
    "h": 53.333,
    "s": 7.563,
    "l": 23.333
  },
  "oklch": {
    "l": 0.366,
    "c": 0.01341,
    "h": 101.2
  },
  "luminance": 0.04921
}

Semantic roles & 50–950 ramp

primary

#403F37

secondary

#64656F

accent

#7EB177

background

#F7F7F6

surface

#EDEDEB

border

#C8C8C6

text

#080807

muted

#7B7B7A

Preview Lab

Preview with #403F37

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

Preview Lab → · Contrast checker → · Palette generator →