#403E40#403E40

#403E40 is a dark, near-neutral grey. Relative luminance 0.049; OKLCH L 36.7% C 0.004 H 325.7°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#403E40
RGB	rgb(64, 62, 64)
HSL	hsl(300, 2%, 25%)
HSV	hsv(300, 3%, 25%)
CMYK	cmyk(0%, 3.1%, 0%, 74.9%)
CIE-LAB	lab(26.46, 1.30, -0.92)
CIE-LCH	lch(26.46, 1.59, 324.57°)
OKLab	oklab(36.66% 0.0036 -0.0024)
OKLCH	oklch(36.66% 0.004 325.7)
XYZ	xyz(4.7622, 4.9054, 5.5455)
Luminance	0.0491 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403E40 #3E403E

analogous

#3F3E40 #403E40 #403E3F

triadic

#403E40 #40403E #3E4040

tetradic

#403E40 #403F3E #3E403E #3E3F40

square

#403E40 #403F3E #3E403E #3E3F40

split-complementary

#403E40 #3F403E #3E403F

monochromatic

#100F10 #212021 #403E40 #5F5C5F #7E7A7E

Accessibility & contrast

On white

10.60

#403E40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#403E40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403E40

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403E40	#FFFFFF	#000000	##FFFFFF
##403E40	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E3E40

Deuteranopia (green-blind)

#3E3F40

Tritanopia (blue-blind)

#403E3F

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #403e40;
/* rgb */ color: rgb(64, 62, 64);
/* oklch */ color: oklch(36.7% 0.004 325.7);

Tailwind

colors: {
  custom: {
    50: '#747374',
    500: '#403e40',
    950: '#000000',
  },
}

SCSS

$custom: #403e40;
$custom-light: #747374;
$custom-dark: #000000;

JSON

{
  "hex": "#403e40",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 64
  },
  "hsl": {
    "h": 300,
    "s": 1.587,
    "l": 24.706
  },
  "oklch": {
    "l": 0.36655,
    "c": 0.00431,
    "h": 325.7
  },
  "luminance": 0.04905
}

Semantic roles & 50–950 ramp

primary

#403E40

secondary

#6C6E6C

accent

#AB7D7D

background

#F7F6F7

surface

#EDECED

border

#C8C7C8

text

#080808

muted

#7B7B7B

Preview Lab

Preview with #403E40

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

Preview Lab → · Contrast checker → · Palette generator →