#403F40#403F40

#403F40 is a dark, near-neutral grey. Relative luminance 0.050; OKLCH L 36.9% C 0.002 H 325.6°. Best body text is #FFFFFF at 10.48:1 contrast (WCAG AA passes).

Color values

HEX	#403F40
RGB	rgb(64, 63, 64)
HSL	hsl(300, 1%, 25%)
HSV	hsv(300, 2%, 25%)
CMYK	cmyk(0%, 1.6%, 0%, 74.9%)
CIE-LAB	lab(26.78, 0.65, -0.46)
CIE-LCH	lch(26.78, 0.79, 324.51°)
OKLab	oklab(36.9% 0.0018 -0.0012)
OKLCH	oklch(36.9% 0.002 325.6)
XYZ	xyz(4.8171, 5.0152, 5.5637)
Luminance	0.0502 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F40 #3F403F

analogous

#403F40 #403F40 #403F40

triadic

#403F40 #40403F #3F4040

tetradic

#403F40 #40403F #3F403F #3F4040

square

#403F40 #40403F #3F403F #3F4040

split-complementary

#403F40 #40403F #3F4040

monochromatic

#0F0F0F #212121 #403F40 #5F5D5F #7E7C7E

Accessibility & contrast

On white

10.48

#403F40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#403F40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F40

10.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F40	#FFFFFF	#000000	##FFFFFF
##403F40	1.00	10.48	2.00	10.48
#FFFFFF	10.48	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3F40

Deuteranopia (green-blind)

#3F3F40

Tritanopia (blue-blind)

#403F3F

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #403f40;
/* rgb */ color: rgb(64, 63, 64);
/* oklch */ color: oklch(36.9% 0.002 325.6);

Tailwind

colors: {
  custom: {
    50: '#747474',
    500: '#403f40',
    950: '#000000',
  },
}

SCSS

$custom: #403f40;
$custom-light: #747474;
$custom-dark: #000000;

JSON

{
  "hex": "#403f40",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 64
  },
  "hsl": {
    "h": 300,
    "s": 0.787,
    "l": 24.902
  },
  "oklch": {
    "l": 0.36902,
    "c": 0.00216,
    "h": 325.6
  },
  "luminance": 0.05015
}

Semantic roles & 50–950 ramp

primary

#403F40

secondary

#6D6E6D

accent

#AA7E7E

background

#F7F7F7

surface

#EDEDED

border

#C8C8C8

text

#080808

muted

#7B7B7B

Preview Lab

Preview with #403F40

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

Preview Lab → · Contrast checker → · Palette generator →