#3F424A#3F424A

#3F424A is a dark, near-neutral blue. Relative luminance 0.054; OKLCH L 37.9% C 0.014 H 269.3°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F424A
RGB	rgb(63, 66, 74)
HSL	hsl(224, 8%, 27%)
HSV	hsv(224, 15%, 29%)
CMYK	cmyk(14.9%, 10.8%, 0%, 71%)
CIE-LAB	lab(27.97, 0.68, -5.26)
CIE-LCH	lch(27.97, 5.30, 277.41°)
OKLab	oklab(37.93% -0.0002 -0.0142)
OKLCH	oklch(37.93% 0.014 269.3)
XYZ	xyz(5.2339, 5.4475, 7.2530)
Luminance	0.0545 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F424A #4A473F

analogous

#3F484A #3F424A #423F4A

triadic

#3F424A #4A3F42 #424A3F

tetradic

#3F424A #4A3F48 #4A473F #3F4A42

square

#3F424A #4A3F48 #4A473F #3F4A42

split-complementary

#3F424A #4A423F #484A3F

monochromatic

#0E0F11 #232529 #3F424A #5B5F6B #787D8C

Accessibility & contrast

On white

10.05

#3F424A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#3F424A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F424A

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F424A	#FFFFFF	#000000	##FFFFFF
##3F424A	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#40434A

Deuteranopia (green-blind)

#3F424A

Tritanopia (blue-blind)

#3D4345

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3f424a;
/* rgb */ color: rgb(63, 66, 74);
/* oklch */ color: oklch(37.9% 0.014 269.3);

Tailwind

colors: {
  custom: {
    50: '#74767c',
    500: '#3f424a',
    950: '#000000',
  },
}

SCSS

$custom: #3f424a;
$custom-light: #74767c;
$custom-dark: #000000;

JSON

{
  "hex": "#3f424a",
  "rgb": {
    "r": 63,
    "g": 66,
    "b": 74
  },
  "hsl": {
    "h": 223.636,
    "s": 8.029,
    "l": 26.863
  },
  "oklch": {
    "l": 0.37931,
    "c": 0.01419,
    "h": 269.3
  },
  "luminance": 0.05448
}

Semantic roles & 50–950 ramp

primary

#3F424A

secondary

#79756C

accent

#A177B1

background

#F7F7F7

surface

#EDEDEE

border

#C8C8C9

text

#080809

muted

#7B7B7B

Preview Lab

Preview with #3F424A

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

Preview Lab → · Contrast checker → · Palette generator →