#3F424D#3F424D

#3F424D is a dark, near-neutral blue. Relative luminance 0.055; OKLCH L 38.1% C 0.019 H 273.4°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#3F424D
RGB	rgb(63, 66, 77)
HSL	hsl(227, 10%, 27%)
HSV	hsv(227, 18%, 30%)
CMYK	cmyk(18.2%, 14.3%, 0%, 69.8%)
CIE-LAB	lab(28.08, 1.45, -7.05)
CIE-LCH	lch(28.08, 7.20, 281.63°)
OKLab	oklab(38.06% 0.0011 -0.0191)
OKLCH	oklch(38.06% 0.019 273.4)
XYZ	xyz(5.3374, 5.4889, 7.7980)
Luminance	0.0549 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F424D #4D4A3F

analogous

#3F494D #3F424D #433F4D

triadic

#3F424D #4D3F42 #424D3F

tetradic

#3F424D #4D3F49 #4D4A3F #3F4D43

square

#3F424D #4D3F49 #4D4A3F #3F4D43

split-complementary

#3F424D #4D433F #494D3F

monochromatic

#0E0E11 #23252B #3F424D #5B5F6F #777C90

Accessibility & contrast

On white

10.01

#3F424D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#3F424D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F424D

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F424D	#FFFFFF	#000000	##FFFFFF
##3F424D	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F434E

Deuteranopia (green-blind)

#3E424D

Tritanopia (blue-blind)

#3C4446

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3f424d;
/* rgb */ color: rgb(63, 66, 77);
/* oklch */ color: oklch(38.1% 0.019 273.4);

Tailwind

colors: {
  custom: {
    50: '#74767e',
    500: '#3f424d',
    950: '#000000',
  },
}

SCSS

$custom: #3f424d;
$custom-light: #74767e;
$custom-dark: #000000;

JSON

{
  "hex": "#3f424d",
  "rgb": {
    "r": 63,
    "g": 66,
    "b": 77
  },
  "hsl": {
    "h": 227.143,
    "s": 10,
    "l": 27.451
  },
  "oklch": {
    "l": 0.38055,
    "c": 0.01914,
    "h": 273.4
  },
  "luminance": 0.05489
}

Semantic roles & 50–950 ramp

primary

#3F424D

secondary

#7C796C

accent

#A675B3

background

#F7F7F7

surface

#EDEDEE

border

#C8C8C9

text

#08080A

muted

#7B7B7C

Preview Lab

Preview with #3F424D

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

Preview Lab → · Contrast checker → · Palette generator →