#3F64D3#3F64D3

#3F64D3 is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.9% C 0.176 H 266.5°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#3F64D3
RGB	rgb(63, 100, 211)
HSL	hsl(225, 63%, 54%)
HSV	hsv(225, 70%, 83%)
CMYK	cmyk(70.1%, 52.6%, 0%, 17.3%)
CIE-LAB	lab(45.46, 24.13, -61.15)
CIE-LCH	lch(45.46, 65.74, 291.53°)
OKLab	oklab(53.86% -0.0106 -0.1759)
OKLCH	oklch(53.86% 0.176 266.5)
XYZ	xyz(18.3608, 14.8724, 63.5184)
Luminance	0.1487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F64D3 #D3AE3F

analogous

#3FAED3 #3F64D3 #643FD3

triadic

#3F64D3 #D33F64 #64D33F

tetradic

#3F64D3 #D33FAE #D3AE3F #3FD364

square

#3F64D3 #D33FAE #D3AE3F #3FD364

split-complementary

#3F64D3 #D3643F #AED33F

monochromatic

#1C347B #2849AD #3F64D3 #718CDE #A3B4EA

Accessibility & contrast

On white

5.28

#3F64D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#3F64D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F64D3

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F64D3	#FFFFFF	#000000	##FFFFFF
##3F64D3	1.00	5.28	3.97	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1673D7

Deuteranopia (green-blind)

#0065D1

Tritanopia (blue-blind)

#007F92

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f64d3;
/* rgb */ color: rgb(63, 100, 211);
/* oklch */ color: oklch(53.9% 0.176 266.5);

Tailwind

colors: {
  custom: {
    50: '#868fe1',
    500: '#3f64d3',
    950: '#000000',
  },
}

SCSS

$custom: #3f64d3;
$custom-light: #868fe1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f64d3",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 211
  },
  "hsl": {
    "h": 225,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.5386,
    "c": 0.17619,
    "h": 266.5
  },
  "luminance": 0.14874
}

Semantic roles & 50–950 ramp

primary

#3F64D3

secondary

#D7C797

accent

#BD42E6

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0D0C15

muted

#7D7D83

Preview Lab

Preview with #3F64D3

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

Preview Lab → · Contrast checker → · Palette generator →