#39403F#39403F

#39403F is a dark, near-neutral grey. Relative luminance 0.049; OKLCH L 36.5% C 0.009 H 186.4°. Best body text is #FFFFFF at 10.61:1 contrast (WCAG AA passes).

Color values

HEX	#39403F
RGB	rgb(57, 64, 63)
HSL	hsl(171, 6%, 24%)
HSV	hsv(171, 11%, 25%)
CMYK	cmyk(10.9%, 0%, 1.6%, 74.9%)
CIE-LAB	lab(26.43, -3.14, -0.38)
CIE-LCH	lch(26.43, 3.16, 186.90°)
OKLab	oklab(36.46% -0.0094 -0.0011)
OKLCH	oklch(36.46% 0.009 186.4)
XYZ	xyz(4.4177, 4.8955, 5.4138)
Luminance	0.0490 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#39403F #40393A

analogous

#39403B #39403F #393D40

triadic

#39403F #3F3940 #403F39

tetradic

#39403F #3B3940 #40393A #3D4039

square

#39403F #3B3940 #40393A #3D4039

split-complementary

#39403F #40393D #403B39

monochromatic

#0E1010 #1C201F #39403F #56605F #73817F

Accessibility & contrast

On white

10.61

#39403F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#39403F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #39403F

10.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##39403F	#FFFFFF	#000000	##FFFFFF
##39403F	1.00	10.61	1.98	10.61
#FFFFFF	10.61	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3F3F

Deuteranopia (green-blind)

#3E3E3F

Tritanopia (blue-blind)

#374040

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #39403f;
/* rgb */ color: rgb(57, 64, 63);
/* oklch */ color: oklch(36.5% 0.009 186.4);

Tailwind

colors: {
  custom: {
    50: '#6f7474',
    500: '#39403f',
    950: '#000000',
  },
}

SCSS

$custom: #39403f;
$custom-light: #6f7474;
$custom-dark: #000000;

JSON

{
  "hex": "#39403f",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 63
  },
  "hsl": {
    "h": 171.429,
    "s": 5.785,
    "l": 23.725
  },
  "oklch": {
    "l": 0.36464,
    "c": 0.00947,
    "h": 186.4
  },
  "luminance": 0.04896
}

Semantic roles & 50–950 ramp

primary

#39403F

secondary

#6F6667

accent

#7981AF

background

#F6F7F7

surface

#ECEDED

border

#C7C8C8

text

#070808

muted

#7A7B7B

Preview Lab

Preview with #39403F

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

Preview Lab → · Contrast checker → · Palette generator →