#40403F#40403F

#40403F is a dark, near-neutral grey. Relative luminance 0.051; OKLCH L 37.1% C 0.002 H 106.6°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#40403F
RGB	rgb(64, 64, 63)
HSL	hsl(60, 1%, 25%)
HSV	hsv(60, 2%, 25%)
CMYK	cmyk(0%, 0%, 1.6%, 74.9%)
CIE-LAB	lab(27.06, -0.22, 0.61)
CIE-LCH	lch(27.06, 0.65, 110.09°)
OKLab	oklab(37.11% -0.0005 0.0016)
OKLCH	oklch(37.11% 0.002 106.6)
XYZ	xyz(4.8448, 5.1157, 5.4339)
Luminance	0.0512 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40403F #3F3F40

analogous

#40403F #40403F #40403F

triadic

#40403F #3F4040 #403F40

tetradic

#40403F #3F4040 #3F3F40 #403F40

square

#40403F #3F4040 #3F3F40 #403F40

split-complementary

#40403F #3F4040 #403F40

monochromatic

#0F0F0F #212121 #40403F #5F5F5D #7E7E7C

Accessibility & contrast

On white

10.38

#40403F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#40403F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40403F

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40403F	#FFFFFF	#000000	##FFFFFF
##40403F	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#40403F

Deuteranopia (green-blind)

#40403F

Tritanopia (blue-blind)

#404040

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #40403f;
/* rgb */ color: rgb(64, 64, 63);
/* oklch */ color: oklch(37.1% 0.002 106.6);

Tailwind

colors: {
  custom: {
    50: '#747474',
    500: '#40403f',
    950: '#000000',
  },
}

SCSS

$custom: #40403f;
$custom-light: #747474;
$custom-dark: #000000;

JSON

{
  "hex": "#40403f",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 63
  },
  "hsl": {
    "h": 60,
    "s": 0.787,
    "l": 24.902
  },
  "oklch": {
    "l": 0.37114,
    "c": 0.00168,
    "h": 106.6
  },
  "luminance": 0.05116
}

Semantic roles & 50–950 ramp

primary

#40403F

secondary

#6D6D6E

accent

#7EAA7E

background

#F7F7F7

surface

#EDEDED

border

#C8C8C8

text

#080808

muted

#7B7B7B

Preview Lab

Preview with #40403F

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

Preview Lab → · Contrast checker → · Palette generator →