#3F64C8#3F64C8

#3F64C8 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.1% C 0.161 H 265.8°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#3F64C8
RGB	rgb(63, 100, 200)
HSL	hsl(224, 55%, 52%)
HSV	hsv(224, 69%, 78%)
CMYK	cmyk(68.5%, 50%, 0%, 21.6%)
CIE-LAB	lab(44.72, 20.17, -56.04)
CIE-LCH	lch(44.72, 59.55, 289.79°)
OKLab	oklab(53.06% -0.0117 -0.1608)
OKLCH	oklch(53.06% 0.161 265.8)
XYZ	xyz(17.0288, 14.3395, 56.5028)
Luminance	0.1434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F64C8 #C8A33F

analogous

#3FA9C8 #3F64C8 #5F3FC8

triadic

#3F64C8 #C83F64 #64C83F

tetradic

#3F64C8 #C83FA9 #C8A33F #3FC85F

square

#3F64C8 #C83FA9 #C8A33F #3FC85F

split-complementary

#3F64C8 #C85F3F #A9C83F

monochromatic

#1F346D #2D4B9D #3F64C8 #6F8AD6 #9EB1E3

Accessibility & contrast

On white

5.43

#3F64C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3F64C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F64C8

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F64C8	#FFFFFF	#000000	##FFFFFF
##3F64C8	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A70CC

Deuteranopia (green-blind)

#0064C6

Tritanopia (blue-blind)

#007C8C

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3f64c8;
/* rgb */ color: rgb(63, 100, 200);
/* oklch */ color: oklch(53.1% 0.161 265.8);

Tailwind

colors: {
  custom: {
    50: '#848fd9',
    500: '#3f64c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f64c8;
$custom-light: #848fd9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f64c8",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 200
  },
  "hsl": {
    "h": 223.796,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.5306,
    "c": 0.16126,
    "h": 265.8
  },
  "luminance": 0.14341
}

Semantic roles & 50–950 ramp

primary

#3F64C8

secondary

#D0BF93

accent

#B649DF

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F64C8

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

Preview Lab → · Contrast checker → · Palette generator →