#40403D#40403D

#40403D is a dark, near-neutral grey. Relative luminance 0.051; OKLCH L 37.0% C 0.005 H 106.6°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#40403D
RGB	rgb(64, 64, 61)
HSL	hsl(60, 2%, 25%)
HSV	hsv(60, 5%, 25%)
CMYK	cmyk(0%, 0%, 4.7%, 74.9%)
CIE-LAB	lab(27.00, -0.66, 1.83)
CIE-LCH	lch(27.00, 1.95, 109.79°)
OKLab	oklab(37.05% -0.0014 0.0048)
OKLCH	oklch(37.05% 0.005 106.6)
XYZ	xyz(4.7899, 5.0937, 5.1448)
Luminance	0.0509 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40403D #3D3D40

analogous

#403F3D #40403D #3F403D

triadic

#40403D #3D4040 #403D40

tetradic

#40403D #3D403F #3D3D40 #403D3F

square

#40403D #3D403F #3D3D40 #403D3F

split-complementary

#40403D #3D3F40 #3F3D40

monochromatic

#10100F #21211F #40403D #5F5F5B #7F7F79

Accessibility & contrast

On white

10.40

#40403D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#40403D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40403D

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40403D	#FFFFFF	#000000	##FFFFFF
##40403D	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#41403D

Deuteranopia (green-blind)

#41403D

Tritanopia (blue-blind)

#41403F

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #40403d;
/* rgb */ color: rgb(64, 64, 61);
/* oklch */ color: oklch(37.0% 0.005 106.6);

Tailwind

colors: {
  custom: {
    50: '#747472',
    500: '#40403d',
    950: '#000000',
  },
}

SCSS

$custom: #40403d;
$custom-light: #747472;
$custom-dark: #000000;

JSON

{
  "hex": "#40403d",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 61
  },
  "hsl": {
    "h": 60,
    "s": 2.4,
    "l": 24.51
  },
  "oklch": {
    "l": 0.37045,
    "c": 0.00503,
    "h": 106.6
  },
  "luminance": 0.05094
}

Semantic roles & 50–950 ramp

primary

#40403D

secondary

#6B6B6E

accent

#7CAC7C

background

#F7F7F6

surface

#EDEDEC

border

#C8C8C7

text

#080808

muted

#7B7B7B

Preview Lab

Preview with #40403D

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

Preview Lab → · Contrast checker → · Palette generator →