#3F424E#3F424E

#3F424E is a dark, muted blue. Relative luminance 0.055; OKLCH L 38.1% C 0.021 H 274.3°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F424E
RGB	rgb(63, 66, 78)
HSL	hsl(228, 11%, 28%)
HSV	hsv(228, 19%, 31%)
CMYK	cmyk(19.2%, 15.4%, 0%, 69.4%)
CIE-LAB	lab(28.12, 1.71, -7.64)
CIE-LCH	lch(28.12, 7.83, 282.60°)
OKLab	oklab(38.1% 0.0016 -0.0207)
OKLCH	oklch(38.1% 0.021 274.3)
XYZ	xyz(5.3729, 5.5032, 7.9854)
Luminance	0.0550 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F424E #4E4B3F

analogous

#3F494E #3F424E #433F4E

triadic

#3F424E #4E3F42 #424E3F

tetradic

#3F424E #4E3F49 #4E4B3F #3F4E43

square

#3F424E #4E3F49 #4E4B3F #3F4E43

split-complementary

#3F424E #4E433F #494E3F

monochromatic

#0E0E11 #24252C #3F424E #5A5F70 #777C91

Accessibility & contrast

On white

10.00

#3F424E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#3F424E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F424E

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F424E	#FFFFFF	#000000	##FFFFFF
##3F424E	1.00	10.00	2.10	10.00
#FFFFFF	10.00	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F434F

Deuteranopia (green-blind)

#3E424E

Tritanopia (blue-blind)

#3C4446

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3f424e;
/* rgb */ color: rgb(63, 66, 78);
/* oklch */ color: oklch(38.1% 0.021 274.3);

Tailwind

colors: {
  custom: {
    50: '#74767f',
    500: '#3f424e',
    950: '#000000',
  },
}

SCSS

$custom: #3f424e;
$custom-light: #74767f;
$custom-dark: #000000;

JSON

{
  "hex": "#3f424e",
  "rgb": {
    "r": 63,
    "g": 66,
    "b": 78
  },
  "hsl": {
    "h": 228,
    "s": 10.638,
    "l": 27.647
  },
  "oklch": {
    "l": 0.38097,
    "c": 0.02081,
    "h": 274.3
  },
  "luminance": 0.05503
}

Semantic roles & 50–950 ramp

primary

#3F424E

secondary

#7D7A6C

accent

#A774B4

background

#F7F7F7

surface

#EDEDEE

border

#C8C8C9

text

#08080A

muted

#7B7B7C

Preview Lab

Preview with #3F424E

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

Preview Lab → · Contrast checker → · Palette generator →