#3566D3#3566D3

#3566D3 is a mid, vivid blue. Relative luminance 0.150; OKLCH L 53.8% C 0.177 H 263.4°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#3566D3
RGB	rgb(53, 102, 211)
HSL	hsl(221, 64%, 52%)
HSV	hsv(221, 75%, 83%)
CMYK	cmyk(74.9%, 51.7%, 0%, 17.3%)
CIE-LAB	lab(45.58, 21.56, -60.97)
CIE-LCH	lch(45.58, 64.67, 289.47°)
OKLab	oklab(53.84% -0.0202 -0.1755)
OKLCH	oklch(53.84% 0.177 263.4)
XYZ	xyz(17.9733, 14.9608, 63.5559)
Luminance	0.1496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3566D3 #D3A235

analogous

#35B5D3 #3566D3 #5335D3

triadic

#3566D3 #D33566 #66D335

tetradic

#3566D3 #D335B5 #D3A235 #35D353

square

#3566D3 #D335B5 #D3A235 #35D353

split-complementary

#3566D3 #D35335 #B5D335

monochromatic

#193674 #244DA7 #3566D3 #678CDE #9AB2E9

Accessibility & contrast

On white

5.26

#3566D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#3566D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3566D3

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3566D3	#FFFFFF	#000000	##FFFFFF
##3566D3	1.00	5.26	3.99	5.26
#FFFFFF	5.26	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C74D7

Deuteranopia (green-blind)

#0065D1

Tritanopia (blue-blind)

#008093

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3566d3;
/* rgb */ color: rgb(53, 102, 211);
/* oklch */ color: oklch(53.8% 0.177 263.4);

Tailwind

colors: {
  custom: {
    50: '#8291e1',
    500: '#3566d3',
    950: '#000000',
  },
}

SCSS

$custom: #3566d3;
$custom-light: #8291e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3566d3",
  "rgb": {
    "r": 53,
    "g": 102,
    "b": 211
  },
  "hsl": {
    "h": 221.392,
    "s": 64.228,
    "l": 51.765
  },
  "oklch": {
    "l": 0.53838,
    "c": 0.17666,
    "h": 263.4
  },
  "luminance": 0.14963
}

Semantic roles & 50–950 ramp

primary

#3566D3

secondary

#D5BF8F

accent

#B441E7

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3566D3

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

Preview Lab → · Contrast checker → · Palette generator →