#3F64BE#3F64BE

#3F64BE is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.4% C 0.147 H 264.9°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#3F64BE
RGB	rgb(63, 100, 190)
HSL	hsl(223, 50%, 50%)
HSV	hsv(223, 67%, 75%)
CMYK	cmyk(66.8%, 47.4%, 0%, 25.5%)
CIE-LAB	lab(44.07, 16.56, -51.29)
CIE-LCH	lch(44.07, 53.90, 287.90°)
OKLab	oklab(52.36% -0.013 -0.1469)
OKLCH	oklch(52.36% 0.147 264.9)
XYZ	xyz(15.8981, 13.8873, 50.5479)
Luminance	0.1389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F64BE #BE993F

analogous

#3FA4BE #3F64BE #5A3FBE

triadic

#3F64BE #BE3F64 #64BE3F

tetradic

#3F64BE #BE3FA4 #BE993F #3FBE5A

square

#3F64BE #BE3FA4 #BE993F #3FBE5A

split-complementary

#3F64BE #BE5A3F #A4BE3F

monochromatic

#213462 #304C90 #3F64BE #6C89CE #9AAEDD

Accessibility & contrast

On white

5.56

#3F64BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#3F64BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F64BE

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F64BE	#FFFFFF	#000000	##FFFFFF
##3F64BE	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356EC1

Deuteranopia (green-blind)

#1A63BC

Tritanopia (blue-blind)

#007988

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3f64be;
/* rgb */ color: rgb(63, 100, 190);
/* oklch */ color: oklch(52.4% 0.147 264.9);

Tailwind

colors: {
  custom: {
    50: '#828fd2',
    500: '#3f64be',
    950: '#000000',
  },
}

SCSS

$custom: #3f64be;
$custom-light: #828fd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f64be",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 190
  },
  "hsl": {
    "h": 222.52,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.52361,
    "c": 0.14745,
    "h": 264.9
  },
  "luminance": 0.13889
}

Semantic roles & 50–950 ramp

primary

#3F64BE

secondary

#C9B98F

accent

#B14EDA

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3F64BE

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

Preview Lab → · Contrast checker → · Palette generator →