#424B40#424B40

#424B40 is a dark, muted grey. Relative luminance 0.066; OKLCH L 40.1% C 0.022 H 140.0°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#424B40
RGB	rgb(66, 75, 64)
HSL	hsl(109, 8%, 27%)
HSV	hsv(109, 15%, 29%)
CMYK	cmyk(12%, 0%, 14.7%, 70.6%)
CIE-LAB	lab(30.78, -6.08, 5.34)
CIE-LCH	lch(30.78, 8.10, 138.71°)
OKLab	oklab(40.11% -0.0165 0.0139)
OKLCH	oklch(40.11% 0.022 140)
XYZ	xyz(5.6881, 6.5605, 5.8161)
Luminance	0.0656 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424B40 #49404B

analogous

#484B40 #424B40 #404B44

triadic

#424B40 #40424B #4B4042

tetradic

#424B40 #40484B #49404B #4B4440

square

#424B40 #40484B #49404B #4B4440

split-complementary

#424B40 #44404B #4B4048

monochromatic

#0F110E #252A24 #424B40 #5F6C5C #7C8D79

Accessibility & contrast

On white

9.08

#424B40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#424B40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424B40

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424B40	#FFFFFF	#000000	##FFFFFF
##424B40	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C493F

Deuteranopia (green-blind)

#4A4840

Tritanopia (blue-blind)

#424A48

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #424b40;
/* rgb */ color: rgb(66, 75, 64);
/* oklch */ color: oklch(40.1% 0.022 140.0);

Tailwind

colors: {
  custom: {
    50: '#767d74',
    500: '#424b40',
    950: '#000000',
  },
}

SCSS

$custom: #424b40;
$custom-light: #767d74;
$custom-dark: #000000;

JSON

{
  "hex": "#424b40",
  "rgb": {
    "r": 66,
    "g": 75,
    "b": 64
  },
  "hsl": {
    "h": 109.091,
    "s": 7.914,
    "l": 27.255
  },
  "oklch": {
    "l": 0.4011,
    "c": 0.02154,
    "h": 140
  },
  "luminance": 0.06561
}

Semantic roles & 50–950 ramp

primary

#424B40

secondary

#776D7A

accent

#77B1A6

background

#F7F7F7

surface

#EDEEED

border

#C8C9C8

text

#080908

muted

#7B7B7B

Preview Lab

Preview with #424B40

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

Preview Lab → · Contrast checker → · Palette generator →