#3F3FC3#3F3FC3

#3F3FC3 is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.8% C 0.199 H 275.1°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FC3
RGB	rgb(63, 63, 195)
HSL	hsl(240, 52%, 51%)
HSV	hsv(240, 68%, 76%)
CMYK	cmyk(67.7%, 67.7%, 0%, 23.5%)
CIE-LAB	lab(35.10, 41.72, -68.77)
CIE-LCH	lch(35.10, 80.43, 301.24°)
OKLab	oklab(45.79% 0.0179 -0.1986)
OKLCH	oklch(45.79% 0.199 275.1)
XYZ	xyz(13.6745, 8.5507, 52.5490)
Luminance	0.0855 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.85

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3FC3 #C3C33F

analogous

#3F81C3 #3F3FC3 #813FC3

triadic

#3F3FC3 #C33F3F #3FC33F

tetradic

#3F3FC3 #C33F81 #C3C33F #3FC381

square

#3F3FC3 #C33F81 #C3C33F #3FC381

split-complementary

#3F3FC3 #C3813F #81C33F

monochromatic

#202067 #2F2F96 #3F3FC3 #6E6ED2 #9C9CE0

Accessibility & contrast

On white

7.75

#3F3FC3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#3F3FC3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FC3

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FC3	#FFFFFF	#000000	##FFFFFF
##3F3FC3	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C7

Deuteranopia (green-blind)

#004CC1

Tritanopia (blue-blind)

#00627C

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3f3fc3;
/* rgb */ color: rgb(63, 63, 195);
/* oklch */ color: oklch(45.8% 0.199 275.1);

Tailwind

colors: {
  custom: {
    50: '#8575d6',
    500: '#3f3fc3',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fc3;
$custom-light: #8575d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fc3",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 195
  },
  "hsl": {
    "h": 240,
    "s": 52.381,
    "l": 50.588
  },
  "oklch": {
    "l": 0.45792,
    "c": 0.1994,
    "h": 275.1
  },
  "luminance": 0.08552
}

Semantic roles & 50–950 ramp

primary

#3F3FC3

secondary

#CCCC92

accent

#DC4CDC

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3FC3

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

Preview Lab → · Contrast checker → · Palette generator →