#3566CB#3566CB

#3566CB is a mid, vivid blue. Relative luminance 0.146; OKLCH L 53.3% C 0.166 H 262.7°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#3566CB
RGB	rgb(53, 102, 203)
HSL	hsl(220, 59%, 50%)
HSV	hsv(220, 74%, 80%)
CMYK	cmyk(73.9%, 49.8%, 0%, 20.4%)
CIE-LAB	lab(45.04, 18.59, -57.26)
CIE-LCH	lch(45.04, 60.20, 287.98°)
OKLab	oklab(53.25% -0.0212 -0.1646)
OKLCH	oklch(53.25% 0.166 262.7)
XYZ	xyz(16.9952, 14.5696, 58.4048)
Luminance	0.1457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3566CB #CB9A35

analogous

#35B1CB #3566CB #4F35CB

triadic

#3566CB #CB3566 #66CB35

tetradic

#3566CB #CB35B1 #CB9A35 #35CB4F

square

#3566CB #CB35B1 #CB9A35 #35CB4F

split-complementary

#3566CB #CB4F35 #B1CB35

monochromatic

#1B356A #284D9B #3566CB #668BD8 #96B0E4

Accessibility & contrast

On white

5.37

#3566CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#3566CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3566CB

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3566CB	#FFFFFF	#000000	##FFFFFF
##3566CB	1.00	5.37	3.91	5.37
#FFFFFF	5.37	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A72CF

Deuteranopia (green-blind)

#0064C9

Tritanopia (blue-blind)

#007E8F

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3566cb;
/* rgb */ color: rgb(53, 102, 203);
/* oklch */ color: oklch(53.3% 0.166 262.7);

Tailwind

colors: {
  custom: {
    50: '#8091db',
    500: '#3566cb',
    950: '#000000',
  },
}

SCSS

$custom: #3566cb;
$custom-light: #8091db;
$custom-dark: #000000;

JSON

{
  "hex": "#3566cb",
  "rgb": {
    "r": 53,
    "g": 102,
    "b": 203
  },
  "hsl": {
    "h": 220.4,
    "s": 59.055,
    "l": 50.196
  },
  "oklch": {
    "l": 0.53253,
    "c": 0.16594,
    "h": 262.7
  },
  "luminance": 0.14571
}

Semantic roles & 50–950 ramp

primary

#3566CB

secondary

#CFBA8C

accent

#AF46E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3566CB

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

Preview Lab → · Contrast checker → · Palette generator →