#3F3EC0#3F3EC0

#3F3EC0 is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.4% C 0.197 H 275.5°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#3F3EC0
RGB	rgb(63, 62, 192)
HSL	hsl(240, 51%, 50%)
HSV	hsv(240, 68%, 75%)
CMYK	cmyk(67.2%, 67.7%, 0%, 24.7%)
CIE-LAB	lab(34.61, 41.32, -67.82)
CIE-LCH	lch(34.61, 79.41, 301.35°)
OKLab	oklab(45.36% 0.0189 -0.1958)
OKLCH	oklch(45.36% 0.197 275.5)
XYZ	xyz(13.2838, 8.3066, 50.7622)
Luminance	0.0831 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.70

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3EC0 #BFC03E

analogous

#3E7EC0 #3F3EC0 #803EC0

triadic

#3F3EC0 #C03F3E #3EC03F

tetradic

#3F3EC0 #C03E7E #BFC03E #3EC080

square

#3F3EC0 #C03E7E #BFC03E #3EC080

split-complementary

#3F3EC0 #C0803E #7EC03E

monochromatic

#212063 #302F92 #3F3EC0 #6D6CCF #9B9ADE

Accessibility & contrast

On white

7.89

#3F3EC0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3F3EC0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3EC0

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3EC0	#FFFFFF	#000000	##FFFFFF
##3F3EC0	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C4

Deuteranopia (green-blind)

#004BBE

Tritanopia (blue-blind)

#00617A

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3f3ec0;
/* rgb */ color: rgb(63, 62, 192);
/* oklch */ color: oklch(45.4% 0.197 275.5);

Tailwind

colors: {
  custom: {
    50: '#8574d4',
    500: '#3f3ec0',
    950: '#000000',
  },
}

SCSS

$custom: #3f3ec0;
$custom-light: #8574d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3ec0",
  "rgb": {
    "r": 63,
    "g": 62,
    "b": 192
  },
  "hsl": {
    "h": 240.462,
    "s": 51.181,
    "l": 49.804
  },
  "oklch": {
    "l": 0.45355,
    "c": 0.19673,
    "h": 275.5
  },
  "luminance": 0.08308
}

Semantic roles & 50–950 ramp

primary

#3F3EC0

secondary

#CACA8F

accent

#DB4DDA

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3EC0

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

Preview Lab → · Contrast checker → · Palette generator →