#3F448F#3F448F

#3F448F is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.4% C 0.122 H 277.0°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#3F448F
RGB	rgb(63, 68, 143)
HSL	hsl(236, 39%, 40%)
HSV	hsv(236, 56%, 56%)
CMYK	cmyk(55.9%, 52.4%, 0%, 43.9%)
CIE-LAB	lab(32.20, 20.76, -42.37)
CIE-LCH	lch(32.20, 47.19, 296.10°)
OKLab	oklab(42.36% 0.0148 -0.121)
OKLCH	oklch(42.36% 0.122 277)
XYZ	xyz(9.0734, 7.1736, 26.8878)
Luminance	0.0717 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F448F #8F8A3F

analogous

#3F6C8F #3F448F #623F8F

triadic

#3F448F #8F3F44 #448F3F

tetradic

#3F448F #8F3F6C #8F8A3F #3F8F62

square

#3F448F #8F3F6C #8F8A3F #3F8F62

split-complementary

#3F448F #8F623F #6C8F3F

monochromatic

#1A1C3A #2C3065 #3F448F #565CB5 #8185C7

Accessibility & contrast

On white

8.62

#3F448F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#3F448F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F448F

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F448F	#FFFFFF	#000000	##FFFFFF
##3F448F	1.00	8.62	2.43	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D4F92

Deuteranopia (green-blind)

#10498D

Tritanopia (blue-blind)

#185563

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f448f;
/* rgb */ color: rgb(63, 68, 143);
/* oklch */ color: oklch(42.4% 0.122 277.0);

Tailwind

colors: {
  custom: {
    50: '#7b77b0',
    500: '#3f448f',
    950: '#000000',
  },
}

SCSS

$custom: #3f448f;
$custom-light: #7b77b0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f448f",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 143
  },
  "hsl": {
    "h": 236.25,
    "s": 38.835,
    "l": 40.392
  },
  "oklch": {
    "l": 0.42361,
    "c": 0.12195,
    "h": 277
  },
  "luminance": 0.07174
}

Semantic roles & 50–950 ramp

primary

#3F448F

secondary

#B2AE78

accent

#C759CF

background

#F7F7FA

surface

#EEEDF5

border

#C9C8CF

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #3F448F

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

Preview Lab → · Contrast checker → · Palette generator →