#3F445F#3F445F

#3F445F is a dark, muted blue. Relative luminance 0.060; OKLCH L 39.4% C 0.046 H 276.0°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#3F445F
RGB	rgb(63, 68, 95)
HSL	hsl(231, 20%, 31%)
HSV	hsv(231, 34%, 37%)
CMYK	cmyk(33.7%, 28.4%, 0%, 62.7%)
CIE-LAB	lab(29.46, 5.15, -16.60)
CIE-LCH	lch(29.46, 17.38, 287.24°)
OKLab	oklab(39.37% 0.0048 -0.046)
OKLCH	oklch(39.37% 0.046 276)
XYZ	xyz(6.1820, 6.0170, 11.6599)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F445F #5F5A3F

analogous

#3F545F #3F445F #4A3F5F

triadic

#3F445F #5F3F44 #445F3F

tetradic

#3F445F #5F3F54 #5F5A3F #3F5F4A

square

#3F445F #5F3F54 #5F5A3F #3F5F4A

split-complementary

#3F445F #5F4A3F #545F3F

monochromatic

#0E0F15 #272A3A #3F445F #575E84 #757CA3

Accessibility & contrast

On white

9.53

#3F445F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#3F445F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F445F

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F445F	#FFFFFF	#000000	##FFFFFF
##3F445F	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C4760

Deuteranopia (green-blind)

#3A445E

Tritanopia (blue-blind)

#36494D

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3f445f;
/* rgb */ color: rgb(63, 68, 95);
/* oklch */ color: oklch(39.4% 0.046 276.0);

Tailwind

colors: {
  custom: {
    50: '#75778c',
    500: '#3f445f',
    950: '#000000',
  },
}

SCSS

$custom: #3f445f;
$custom-light: #75778c;
$custom-dark: #000000;

JSON

{
  "hex": "#3f445f",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 95
  },
  "hsl": {
    "h": 230.625,
    "s": 20.253,
    "l": 30.98
  },
  "oklch": {
    "l": 0.39372,
    "c": 0.04624,
    "h": 276
  },
  "luminance": 0.06017
}

Semantic roles & 50–950 ramp

primary

#3F445F

secondary

#8F896B

accent

#B06BBD

background

#F7F7F8

surface

#EDEDF0

border

#C8C8CB

text

#08080C

muted

#7B7B7D

Preview Lab

Preview with #3F445F

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

Preview Lab → · Contrast checker → · Palette generator →