#3F63C8#3F63C8

#3F63C8 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.9% C 0.162 H 266.2°. Best body text is #FFFFFF at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#3F63C8
RGB	rgb(63, 99, 200)
HSL	hsl(224, 55%, 52%)
HSV	hsv(224, 69%, 78%)
CMYK	cmyk(68.5%, 50.5%, 0%, 21.6%)
CIE-LAB	lab(44.45, 20.80, -56.47)
CIE-LCH	lch(44.45, 60.18, 290.22°)
OKLab	oklab(52.85% -0.0108 -0.1621)
OKLCH	oklch(52.85% 0.162 266.2)
XYZ	xyz(16.9334, 14.1489, 56.4710)
Luminance	0.1415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F63C8 #C8A43F

analogous

#3FA7C8 #3F63C8 #603FC8

triadic

#3F63C8 #C83F63 #63C83F

tetradic

#3F63C8 #C83FA7 #C8A43F #3FC860

square

#3F63C8 #C83FA7 #C8A43F #3FC860

split-complementary

#3F63C8 #C8603F #A7C83F

monochromatic

#1F346D #2D4A9D #3F63C8 #6F8AD6 #9EB0E3

Accessibility & contrast

On white

5.48

#3F63C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#3F63C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F63C8

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F63C8	#FFFFFF	#000000	##FFFFFF
##3F63C8	1.00	5.48	3.83	5.48
#FFFFFF	5.48	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2770CC

Deuteranopia (green-blind)

#0063C6

Tritanopia (blue-blind)

#007B8C

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3f63c8;
/* rgb */ color: rgb(63, 99, 200);
/* oklch */ color: oklch(52.9% 0.162 266.2);

Tailwind

colors: {
  custom: {
    50: '#848ed9',
    500: '#3f63c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f63c8;
$custom-light: #848ed9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f63c8",
  "rgb": {
    "r": 63,
    "g": 99,
    "b": 200
  },
  "hsl": {
    "h": 224.234,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.52854,
    "c": 0.16248,
    "h": 266.2
  },
  "luminance": 0.14151
}

Semantic roles & 50–950 ramp

primary

#3F63C8

secondary

#D0C093

accent

#B749DF

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F63C8

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

Preview Lab → · Contrast checker → · Palette generator →