#3F63CA#3F63CA

#3F63CA is a mid, vivid blue. Relative luminance 0.142; OKLCH L 53.0% C 0.165 H 266.3°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#3F63CA
RGB	rgb(63, 99, 202)
HSL	hsl(224, 57%, 52%)
HSV	hsv(224, 69%, 79%)
CMYK	cmyk(68.8%, 51%, 0%, 20.8%)
CIE-LAB	lab(44.58, 21.52, -57.41)
CIE-LCH	lch(44.58, 61.31, 290.55°)
OKLab	oklab(53% -0.0106 -0.1649)
OKLCH	oklch(53% 0.165 266.3)
XYZ	xyz(17.1687, 14.2430, 57.7100)
Luminance	0.1424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F63CA #CAA63F

analogous

#3FA9CA #3F63CA #603FCA

triadic

#3F63CA #CA3F63 #63CA3F

tetradic

#3F63CA #CA3FA9 #CAA63F #3FCA60

square

#3F63CA #CA3FA9 #CAA63F #3FCA60

split-complementary

#3F63CA #CA603F #A9CA3F

monochromatic

#1F3470 #2C4AA0 #3F63CA #6F8AD7 #9FB1E4

Accessibility & contrast

On white

5.46

#3F63CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#3F63CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F63CA

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F63CA	#FFFFFF	#000000	##FFFFFF
##3F63CA	1.00	5.46	3.85	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2470CE

Deuteranopia (green-blind)

#0063C8

Tritanopia (blue-blind)

#007B8D

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3f63ca;
/* rgb */ color: rgb(63, 99, 202);
/* oklch */ color: oklch(53.0% 0.165 266.3);

Tailwind

colors: {
  custom: {
    50: '#848edb',
    500: '#3f63ca',
    950: '#000000',
  },
}

SCSS

$custom: #3f63ca;
$custom-light: #848edb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f63ca",
  "rgb": {
    "r": 63,
    "g": 99,
    "b": 202
  },
  "hsl": {
    "h": 224.46,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.52998,
    "c": 0.16522,
    "h": 266.3
  },
  "luminance": 0.14245
}

Semantic roles & 50–950 ramp

primary

#3F63CA

secondary

#D1C194

accent

#B948E0

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F63CA

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

Preview Lab → · Contrast checker → · Palette generator →