#3566BC#3566BC

#3566BC is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.2% C 0.146 H 260.7°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#3566BC
RGB	rgb(53, 102, 188)
HSL	hsl(218, 56%, 47%)
HSV	hsv(218, 72%, 74%)
CMYK	cmyk(71.8%, 45.7%, 0%, 26.3%)
CIE-LAB	lab(44.07, 13.02, -50.15)
CIE-LCH	lch(44.07, 51.81, 284.55°)
OKLab	oklab(52.2% -0.0234 -0.1436)
OKLCH	oklch(52.2% 0.146 260.7)
XYZ	xyz(15.2934, 13.8888, 49.4420)
Luminance	0.1389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3566BC #BC8B35

analogous

#35AABC #3566BC #4735BC

triadic

#3566BC #BC3566 #66BC35

tetradic

#3566BC #BC35AA #BC8B35 #35BC47

square

#3566BC #BC35AA #BC8B35 #35BC47

split-complementary

#3566BC #BC4735 #AABC35

monochromatic

#1A325D #284C8C #3566BC #5D87D1 #8DAADF

Accessibility & contrast

On white

5.56

#3566BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#3566BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3566BC

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3566BC	#FFFFFF	#000000	##FFFFFF
##3566BC	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)

#3A6FBF

Deuteranopia (green-blind)

#1E62BA

Tritanopia (blue-blind)

#007A88

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3566bc;
/* rgb */ color: rgb(53, 102, 188);
/* oklch */ color: oklch(52.2% 0.146 260.7);

Tailwind

colors: {
  custom: {
    50: '#7d91d1',
    500: '#3566bc',
    950: '#000000',
  },
}

SCSS

$custom: #3566bc;
$custom-light: #7d91d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3566bc",
  "rgb": {
    "r": 53,
    "g": 102,
    "b": 188
  },
  "hsl": {
    "h": 218.222,
    "s": 56.017,
    "l": 47.255
  },
  "oklch": {
    "l": 0.52203,
    "c": 0.14555,
    "h": 260.7
  },
  "luminance": 0.1389
}

Semantic roles & 50–950 ramp

primary

#3566BC

secondary

#C9B084

accent

#A948DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3566BC

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

Preview Lab → · Contrast checker → · Palette generator →