#403D37#403D37

#403D37 is a dark, near-neutral grey. Relative luminance 0.047; OKLCH L 36.1% C 0.011 H 84.6°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#403D37
RGB	rgb(64, 61, 55)
HSL	hsl(40, 8%, 23%)
HSV	hsv(40, 14%, 25%)
CMYK	cmyk(0%, 4.7%, 14.1%, 74.9%)
CIE-LAB	lab(25.87, 0.03, 4.16)
CIE-LCH	lch(25.87, 4.16, 89.60°)
OKLab	oklab(36.1% 0.001 0.0109)
OKLCH	oklch(36.1% 0.011 84.6)
XYZ	xyz(4.4726, 4.7034, 4.2859)
Luminance	0.0470 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D37 #373A40

analogous

#403837 #403D37 #3E4037

triadic

#403D37 #37403D #3D3740

tetradic

#403D37 #374038 #373A40 #40373E

square

#403D37 #374038 #373A40 #40373E

split-complementary

#403D37 #373E40 #383740

monochromatic

#10100E #1F1E1B #403D37 #615C53 #827C70

Accessibility & contrast

On white

10.82

#403D37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#403D37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D37

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D37	#FFFFFF	#000000	##FFFFFF
##403D37	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3D37

Deuteranopia (green-blind)

#3F3E37

Tritanopia (blue-blind)

#423C3B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #403d37;
/* rgb */ color: rgb(64, 61, 55);
/* oklch */ color: oklch(36.1% 0.011 84.6);

Tailwind

colors: {
  custom: {
    50: '#74726d',
    500: '#403d37',
    950: '#000000',
  },
}

SCSS

$custom: #403d37;
$custom-light: #74726d;
$custom-dark: #000000;

JSON

{
  "hex": "#403d37",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 55
  },
  "hsl": {
    "h": 40,
    "s": 7.563,
    "l": 23.333
  },
  "oklch": {
    "l": 0.361,
    "c": 0.0109,
    "h": 84.6
  },
  "luminance": 0.04703
}

Semantic roles & 50–950 ramp

primary

#403D37

secondary

#64686F

accent

#8AB177

background

#F7F6F6

surface

#EDECEB

border

#C8C7C6

text

#080807

muted

#7B7B7A

Preview Lab

Preview with #403D37

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

Preview Lab → · Contrast checker → · Palette generator →