#3F3BBC#3F3BBC

#3F3BBC is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.5% C 0.195 H 276.3°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#3F3BBC
RGB	rgb(63, 59, 188)
HSL	hsl(242, 52%, 48%)
HSV	hsv(242, 69%, 74%)
CMYK	cmyk(66.5%, 68.6%, 0%, 26.3%)
CIE-LAB	lab(33.59, 41.77, -67.14)
CIE-LCH	lch(33.59, 79.07, 301.89°)
OKLab	oklab(44.51% 0.0215 -0.1938)
OKLCH	oklch(44.51% 0.195 276.3)
XYZ	xyz(12.6880, 7.8144, 48.4069)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.83

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3BBC #B8BC3B

analogous

#3B78BC #3F3BBC #7F3BBC

triadic

#3F3BBC #BC3F3B #3BBC3F

tetradic

#3F3BBC #BC3B78 #B8BC3B #3BBC7F

square

#3F3BBC #BC3B78 #B8BC3B #3BBC7F

split-complementary

#3F3BBC #BC7F3B #78BC3B

monochromatic

#201E5F #2F2C8D #3F3BBC #6965CF #9694DD

Accessibility & contrast

On white

8.19

#3F3BBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3F3BBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3BBC

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3BBC	#FFFFFF	#000000	##FFFFFF
##3F3BBC	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C0

Deuteranopia (green-blind)

#0049BA

Tritanopia (blue-blind)

#005E77

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f3bbc;
/* rgb */ color: rgb(63, 59, 188);
/* oklch */ color: oklch(44.5% 0.195 276.3);

Tailwind

colors: {
  custom: {
    50: '#8472d1',
    500: '#3f3bbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f3bbc;
$custom-light: #8472d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3bbc",
  "rgb": {
    "r": 63,
    "g": 59,
    "b": 188
  },
  "hsl": {
    "h": 241.86,
    "s": 52.227,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44508,
    "c": 0.19502,
    "h": 276.3
  },
  "luminance": 0.07816
}

Semantic roles & 50–950 ramp

primary

#3F3BBC

secondary

#C7C98A

accent

#DC4CD7

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3BBC

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

Preview Lab → · Contrast checker → · Palette generator →