#404040#404040

#404040 is a dark, near-neutral grey. Relative luminance 0.051; OKLCH L 37.1% C 0.000 H 0.0°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#404040
RGB	rgb(64, 64, 64)
HSL	hsl(0, 0%, 25%)
HSV	hsv(0, 0%, 25%)
CMYK	cmyk(0%, 0%, 0%, 74.9%)
CIE-LAB	lab(27.09, 0.00, -0.00)
CIE-LCH	lch(27.09, 0.00, 323.13°)
OKLab	oklab(37.15% 0 0)
OKLCH	oklch(37.15% 0 0)
XYZ	xyz(4.8730, 5.1269, 5.5824)
Luminance	0.0513 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404040 #404040

analogous

#404040 #404040 #404040

triadic

#404040 #404040 #404040

tetradic

#404040 #404040 #404040 #404040

square

#404040 #404040 #404040 #404040

split-complementary

#404040 #404040 #404040

monochromatic

#0F0F0F #212121 #404040 #5F5F5F #7D7D7D

Accessibility & contrast

On white

10.37

#404040 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#404040 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404040

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404040	#FFFFFF	#000000	##FFFFFF
##404040	1.00	10.37	2.03	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#404040

Deuteranopia (green-blind)

#404040

Tritanopia (blue-blind)

#404040

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #404040;
/* rgb */ color: rgb(64, 64, 64);
/* oklch */ color: oklch(37.1% 0.000 0.0);

Tailwind

colors: {
  custom: {
    50: '#747474',
    500: '#404040',
    950: '#000000',
  },
}

SCSS

$custom: #404040;
$custom-light: #747474;
$custom-dark: #000000;

JSON

{
  "hex": "#404040",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 64
  },
  "hsl": {
    "h": 0,
    "s": 0,
    "l": 25.098
  },
  "oklch": {
    "l": 0.37149,
    "c": 0,
    "h": 0
  },
  "luminance": 0.05127
}

Semantic roles & 50–950 ramp

primary

#404040

secondary

#6E6E6E

accent

#A9A97E

background

#F7F7F7

surface

#EDEDED

border

#C8C8C8

text

#080808

muted

#7B7B7B

Preview Lab

Preview with #404040

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

Preview Lab → · Contrast checker → · Palette generator →