#3F63D5#3F63D5

#3F63D5 is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.8% C 0.180 H 266.9°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3F63D5
RGB	rgb(63, 99, 213)
HSL	hsl(226, 64%, 54%)
HSV	hsv(226, 70%, 84%)
CMYK	cmyk(70.4%, 53.5%, 0%, 16.5%)
CIE-LAB	lab(45.34, 25.48, -62.49)
CIE-LCH	lch(45.34, 67.49, 292.19°)
OKLab	oklab(53.81% -0.0096 -0.1798)
OKLCH	oklch(53.81% 0.18 266.9)
XYZ	xyz(18.5178, 14.7826, 64.8153)
Luminance	0.1479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F63D5 #D5B13F

analogous

#3FAED5 #3F63D5 #663FD5

triadic

#3F63D5 #D53F63 #63D53F

tetradic

#3F63D5 #D53FAE #D5B13F #3FD566

square

#3F63D5 #D53FAE #D5B13F #3FD566

split-complementary

#3F63D5 #D5663F #AED53F

monochromatic

#1C337E #2748B0 #3F63D5 #718CE0 #A3B5EB

Accessibility & contrast

On white

5.31

#3F63D5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#3F63D5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F63D5

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F63D5	#FFFFFF	#000000	##FFFFFF
##3F63D5	1.00	5.31	3.96	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0972D9

Deuteranopia (green-blind)

#0065D3

Tritanopia (blue-blind)

#007F92

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3f63d5;
/* rgb */ color: rgb(63, 99, 213);
/* oklch */ color: oklch(53.8% 0.180 266.9);

Tailwind

colors: {
  custom: {
    50: '#868ee3',
    500: '#3f63d5',
    950: '#000000',
  },
}

SCSS

$custom: #3f63d5;
$custom-light: #868ee3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f63d5",
  "rgb": {
    "r": 63,
    "g": 99,
    "b": 213
  },
  "hsl": {
    "h": 225.6,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.53811,
    "c": 0.1801,
    "h": 266.9
  },
  "luminance": 0.14785
}

Semantic roles & 50–950 ramp

primary

#3F63D5

secondary

#D8C898

accent

#BF41E7

background

#F8F8FE

surface

#F0F0FC

border

#CBCBD5

text

#0D0C15

muted

#7D7D84

Preview Lab

Preview with #3F63D5

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

Preview Lab → · Contrast checker → · Palette generator →