#3F64E4#3F64E4

#3F64E4 is a mid, vivid blue. Relative luminance 0.158; OKLCH L 55.2% C 0.199 H 267.3°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F64E4
RGB	rgb(63, 100, 228)
HSL	hsl(227, 75%, 57%)
HSV	hsv(227, 72%, 89%)
CMYK	cmyk(72.4%, 56.1%, 0%, 10.6%)
CIE-LAB	lab(46.67, 30.23, -68.84)
CIE-LCH	lch(46.67, 75.19, 293.71°)
OKLab	oklab(55.16% -0.0095 -0.1985)
OKLCH	oklch(55.16% 0.199 267.3)
XYZ	xyz(20.6058, 15.7704, 75.3418)
Luminance	0.1577 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F64E4 #E4BF3F

analogous

#3FB7E4 #3F64E4 #6C3FE4

triadic

#3F64E4 #E43F64 #64E43F

tetradic

#3F64E4 #E43FB7 #E4BF3F #3FE46C

square

#3F64E4 #E43FB7 #E4BF3F #3FE46C

split-complementary

#3F64E4 #E46C3F #B7E43F

monochromatic

#153194 #1C43C9 #3F64E4 #758FEC #AABBF3

Accessibility & contrast

On white

5.05

#3F64E4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.15

#3F64E4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F64E4

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F64E4	#FFFFFF	#000000	##FFFFFF
##3F64E4	1.00	5.05	4.15	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.15	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0077E8

Deuteranopia (green-blind)

#0067E1

Tritanopia (blue-blind)

#00849A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3f64e4;
/* rgb */ color: rgb(63, 100, 228);
/* oklch */ color: oklch(55.2% 0.199 267.3);

Tailwind

colors: {
  custom: {
    50: '#898fed',
    500: '#3f64e4',
    950: '#000000',
  },
}

SCSS

$custom: #3f64e4;
$custom-light: #898fed;
$custom-dark: #000000;

JSON

{
  "hex": "#3f64e4",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 228
  },
  "hsl": {
    "h": 226.545,
    "s": 75.342,
    "l": 57.059
  },
  "oklch": {
    "l": 0.55157,
    "c": 0.19873,
    "h": 267.3
  },
  "luminance": 0.15773
}

Semantic roles & 50–950 ramp

primary

#3F64E4

secondary

#E1D29E

accent

#C836F2

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F64E4

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

Preview Lab → · Contrast checker → · Palette generator →