#3F64D8#3F64D8

#3F64D8 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.2% C 0.183 H 266.8°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#3F64D8
RGB	rgb(63, 100, 216)
HSL	hsl(225, 66%, 55%)
HSV	hsv(225, 71%, 85%)
CMYK	cmyk(70.8%, 53.7%, 0%, 15.3%)
CIE-LAB	lab(45.81, 25.93, -63.44)
CIE-LCH	lch(45.81, 68.53, 292.23°)
OKLab	oklab(54.23% -0.0102 -0.1826)
OKLCH	oklch(54.23% 0.183 266.8)
XYZ	xyz(18.9974, 15.1270, 66.8710)
Luminance	0.1513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F64D8 #D8B33F

analogous

#3FB1D8 #3F64D8 #663FD8

triadic

#3F64D8 #D83F64 #64D83F

tetradic

#3F64D8 #D83FB1 #D8B33F #3FD866

square

#3F64D8 #D83FB1 #D8B33F #3FD866

split-complementary

#3F64D8 #D8663F #B1D83F

monochromatic

#1A3482 #2548B5 #3F64D8 #728DE2 #A5B6ED

Accessibility & contrast

On white

5.22

#3F64D8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#3F64D8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F64D8

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F64D8	#FFFFFF	#000000	##FFFFFF
##3F64D8	1.00	5.22	4.03	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0374DC

Deuteranopia (green-blind)

#0066D6

Tritanopia (blue-blind)

#008094

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f64d8;
/* rgb */ color: rgb(63, 100, 216);
/* oklch */ color: oklch(54.2% 0.183 266.8);

Tailwind

colors: {
  custom: {
    50: '#878fe5',
    500: '#3f64d8',
    950: '#000000',
  },
}

SCSS

$custom: #3f64d8;
$custom-light: #878fe5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f64d8",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 216
  },
  "hsl": {
    "h": 225.49,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.54234,
    "c": 0.18289,
    "h": 266.8
  },
  "luminance": 0.15129
}

Semantic roles & 50–950 ramp

primary

#3F64D8

secondary

#DACA99

accent

#C03FE9

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F64D8

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

Preview Lab → · Contrast checker → · Palette generator →