#3F3CB8#3F3CB8

#3F3CB8 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.3% C 0.189 H 276.5°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#3F3CB8
RGB	rgb(63, 60, 184)
HSL	hsl(241, 51%, 48%)
HSV	hsv(241, 67%, 72%)
CMYK	cmyk(65.8%, 67.4%, 0%, 27.8%)
CIE-LAB	lab(33.45, 39.85, -65.01)
CIE-LCH	lch(33.45, 76.25, 301.51°)
OKLab	oklab(44.3% 0.0213 -0.1876)
OKLCH	oklch(44.3% 0.189 276.5)
XYZ	xyz(12.3147, 7.7481, 46.1847)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.61

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3CB8 #B5B83C

analogous

#3C77B8 #3F3CB8 #7D3CB8

triadic

#3F3CB8 #B83F3C #3CB83F

tetradic

#3F3CB8 #B83C77 #B5B83C #3CB87D

square

#3F3CB8 #B83C77 #B5B83C #3CB87D

split-complementary

#3F3CB8 #B87D3C #77B83C

monochromatic

#1F1E5C #2F2D8A #3F3CB8 #6765CD #9493DC

Accessibility & contrast

On white

8.24

#3F3CB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#3F3CB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3CB8

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3CB8	#FFFFFF	#000000	##FFFFFF
##3F3CB8	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BC

Deuteranopia (green-blind)

#0049B6

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f3cb8;
/* rgb */ color: rgb(63, 60, 184);
/* oklch */ color: oklch(44.3% 0.189 276.5);

Tailwind

colors: {
  custom: {
    50: '#8372ce',
    500: '#3f3cb8',
    950: '#000000',
  },
}

SCSS

$custom: #3f3cb8;
$custom-light: #8372ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3cb8",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 184
  },
  "hsl": {
    "h": 241.452,
    "s": 50.82,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44296,
    "c": 0.18881,
    "h": 276.5
  },
  "luminance": 0.07749
}

Semantic roles & 50–950 ramp

primary

#3F3CB8

secondary

#C5C789

accent

#DA4DD7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3F3CB8

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

Preview Lab → · Contrast checker → · Palette generator →