#3F63CD#3F63CD

#3F63CD is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.2% C 0.169 H 266.5°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#3F63CD
RGB	rgb(63, 99, 205)
HSL	hsl(225, 59%, 53%)
HSV	hsv(225, 69%, 80%)
CMYK	cmyk(69.3%, 51.7%, 0%, 19.6%)
CIE-LAB	lab(44.78, 22.60, -58.81)
CIE-LCH	lch(44.78, 63.00, 291.03°)
OKLab	oklab(53.22% -0.0103 -0.169)
OKLCH	oklch(53.22% 0.169 266.5)
XYZ	xyz(17.5274, 14.3865, 59.5989)
Luminance	0.1439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F63CD #CDA93F

analogous

#3FAACD #3F63CD #623FCD

triadic

#3F63CD #CD3F63 #63CD3F

tetradic

#3F63CD #CD3FAA #CDA93F #3FCD62

square

#3F63CD #CD3FAA #CDA93F #3FCD62

split-complementary

#3F63CD #CD623F #AACD3F

monochromatic

#1E3474 #2B49A4 #3F63CD #708ADA #A0B2E6

Accessibility & contrast

On white

5.42

#3F63CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#3F63CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F63CD

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F63CD	#FFFFFF	#000000	##FFFFFF
##3F63CD	1.00	5.42	3.88	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F71D1

Deuteranopia (green-blind)

#0064CB

Tritanopia (blue-blind)

#007C8E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3f63cd;
/* rgb */ color: rgb(63, 99, 205);
/* oklch */ color: oklch(53.2% 0.169 266.5);

Tailwind

colors: {
  custom: {
    50: '#858edd',
    500: '#3f63cd',
    950: '#000000',
  },
}

SCSS

$custom: #3f63cd;
$custom-light: #858edd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f63cd",
  "rgb": {
    "r": 63,
    "g": 99,
    "b": 205
  },
  "hsl": {
    "h": 224.789,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.53217,
    "c": 0.1693,
    "h": 266.5
  },
  "luminance": 0.14388
}

Semantic roles & 50–950 ramp

primary

#3F63CD

secondary

#D3C395

accent

#BA46E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F63CD

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

Preview Lab → · Contrast checker → · Palette generator →