#3F424F#3F424F

#3F424F is a dark, muted blue. Relative luminance 0.055; OKLCH L 38.1% C 0.022 H 275.1°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F424F
RGB	rgb(63, 66, 79)
HSL	hsl(229, 11%, 28%)
HSV	hsv(229, 20%, 31%)
CMYK	cmyk(20.3%, 16.5%, 0%, 69%)
CIE-LAB	lab(28.16, 1.97, -8.24)
CIE-LCH	lch(28.16, 8.47, 283.47°)
OKLab	oklab(38.14% 0.002 -0.0224)
OKLCH	oklch(38.14% 0.022 275.1)
XYZ	xyz(5.4091, 5.5176, 8.1756)
Luminance	0.0552 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F424F #4F4C3F

analogous

#3F4A4F #3F424F #443F4F

triadic

#3F424F #4F3F42 #424F3F

tetradic

#3F424F #4F3F4A #4F4C3F #3F4F44

square

#3F424F #4F3F4A #4F4C3F #3F4F44

split-complementary

#3F424F #4F443F #4A4F3F

monochromatic

#0E0E11 #24262D #3F424F #5A5E71 #767C92

Accessibility & contrast

On white

9.98

#3F424F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#3F424F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F424F

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F424F	#FFFFFF	#000000	##FFFFFF
##3F424F	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E4350

Deuteranopia (green-blind)

#3D424F

Tritanopia (blue-blind)

#3B4446

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3f424f;
/* rgb */ color: rgb(63, 66, 79);
/* oklch */ color: oklch(38.1% 0.022 275.1);

Tailwind

colors: {
  custom: {
    50: '#747680',
    500: '#3f424f',
    950: '#000000',
  },
}

SCSS

$custom: #3f424f;
$custom-light: #747680;
$custom-dark: #000000;

JSON

{
  "hex": "#3f424f",
  "rgb": {
    "r": 63,
    "g": 66,
    "b": 79
  },
  "hsl": {
    "h": 228.75,
    "s": 11.268,
    "l": 27.843
  },
  "oklch": {
    "l": 0.3814,
    "c": 0.02248,
    "h": 275.1
  },
  "luminance": 0.05518
}

Semantic roles & 50–950 ramp

primary

#3F424F

secondary

#7E7B6C

accent

#A874B4

background

#F7F7F7

surface

#EDEDEE

border

#C8C8C9

text

#08080A

muted

#7B7B7C

Preview Lab

Preview with #3F424F

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

Preview Lab → · Contrast checker → · Palette generator →