#3F445A#3F445A

#3F445A is a dark, muted blue. Relative luminance 0.059; OKLCH L 39.1% C 0.038 H 274.6°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#3F445A
RGB	rgb(63, 68, 90)
HSL	hsl(229, 18%, 30%)
HSV	hsv(229, 30%, 35%)
CMYK	cmyk(30%, 24.4%, 0%, 64.7%)
CIE-LAB	lab(29.23, 3.70, -13.73)
CIE-LCH	lch(29.23, 14.22, 285.07°)
OKLab	oklab(39.13% 0.003 -0.0378)
OKLCH	oklch(39.13% 0.038 274.6)
XYZ	xyz(5.9620, 5.9290, 10.5012)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F445A #5A553F

analogous

#3F515A #3F445A #483F5A

triadic

#3F445A #5A3F44 #445A3F

tetradic

#3F445A #5A3F51 #5A553F #3F5A48

square

#3F445A #5A3F51 #5A553F #3F5A48

split-complementary

#3F445A #5A483F #515A3F

monochromatic

#0D0E12 #262936 #3F445A #585F7E #757D9E

Accessibility & contrast

On white

9.61

#3F445A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#3F445A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F445A

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F445A	#FFFFFF	#000000	##FFFFFF
##3F445A	1.00	9.61	2.19	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E465B

Deuteranopia (green-blind)

#3C4459

Tritanopia (blue-blind)

#38484B

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3f445a;
/* rgb */ color: rgb(63, 68, 90);
/* oklch */ color: oklch(39.1% 0.038 274.6);

Tailwind

colors: {
  custom: {
    50: '#747788',
    500: '#3f445a',
    950: '#000000',
  },
}

SCSS

$custom: #3f445a;
$custom-light: #747788;
$custom-dark: #000000;

JSON

{
  "hex": "#3f445a",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 90
  },
  "hsl": {
    "h": 228.889,
    "s": 17.647,
    "l": 30
  },
  "oklch": {
    "l": 0.39126,
    "c": 0.03794,
    "h": 274.6
  },
  "luminance": 0.05929
}

Semantic roles & 50–950 ramp

primary

#3F445A

secondary

#8A846B

accent

#AC6DBA

background

#F7F7F8

surface

#EDEDEF

border

#C8C8CA

text

#08080B

muted

#7B7B7C

Preview Lab

Preview with #3F445A

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

Preview Lab → · Contrast checker → · Palette generator →