#3F63E4#3F63E4

#3F63E4 is a mid, vivid blue. Relative luminance 0.156; OKLCH L 55.0% C 0.200 H 267.5°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#3F63E4
RGB	rgb(63, 99, 228)
HSL	hsl(227, 75%, 57%)
HSV	hsv(227, 72%, 89%)
CMYK	cmyk(72.4%, 56.6%, 0%, 10.6%)
CIE-LAB	lab(46.42, 30.86, -69.26)
CIE-LCH	lch(46.42, 75.82, 294.02°)
OKLab	oklab(54.97% -0.0088 -0.1997)
OKLCH	oklch(54.97% 0.2 267.5)
XYZ	xyz(20.5105, 15.5797, 75.3100)
Luminance	0.1558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F63E4 #E4C03F

analogous

#3FB6E4 #3F63E4 #6E3FE4

triadic

#3F63E4 #E43F63 #63E43F

tetradic

#3F63E4 #E43FB6 #E4C03F #3FE46E

square

#3F63E4 #E43FB6 #E4C03F #3FE46E

split-complementary

#3F63E4 #E46E3F #B6E43F

monochromatic

#153194 #1C42C9 #3F63E4 #758FEC #AABAF3

Accessibility & contrast

On white

5.10

#3F63E4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#3F63E4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F63E4

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F63E4	#FFFFFF	#000000	##FFFFFF
##3F63E4	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076E8

Deuteranopia (green-blind)

#0067E1

Tritanopia (blue-blind)

#00839A

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3f63e4;
/* rgb */ color: rgb(63, 99, 228);
/* oklch */ color: oklch(55.0% 0.200 267.5);

Tailwind

colors: {
  custom: {
    50: '#898fed',
    500: '#3f63e4',
    950: '#000000',
  },
}

SCSS

$custom: #3f63e4;
$custom-light: #898fed;
$custom-dark: #000000;

JSON

{
  "hex": "#3f63e4",
  "rgb": {
    "r": 63,
    "g": 99,
    "b": 228
  },
  "hsl": {
    "h": 226.909,
    "s": 75.342,
    "l": 57.059
  },
  "oklch": {
    "l": 0.54967,
    "c": 0.19991,
    "h": 267.5
  },
  "luminance": 0.15582
}

Semantic roles & 50–950 ramp

primary

#3F63E4

secondary

#E1D29E

accent

#C936F2

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F63E4

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

Preview Lab → · Contrast checker → · Palette generator →