#3566B2#3566B2

#3566B2 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.5% C 0.132 H 258.9°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#3566B2
RGB	rgb(53, 102, 178)
HSL	hsl(216, 54%, 45%)
HSV	hsv(216, 70%, 70%)
CMYK	cmyk(70.2%, 42.7%, 0%, 30.2%)
CIE-LAB	lab(43.47, 9.31, -45.29)
CIE-LCH	lch(43.47, 46.24, 281.62°)
OKLab	oklab(51.54% -0.0253 -0.1294)
OKLCH	oklch(51.54% 0.132 258.9)
XYZ	xyz(14.2526, 13.4725, 43.9602)
Luminance	0.1347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3566B2 #B28135

analogous

#35A4B2 #3566B2 #4235B2

triadic

#3566B2 #B23566 #66B235

tetradic

#3566B2 #B235A4 #B28135 #35B242

square

#3566B2 #B235A4 #B28135 #35B242

split-complementary

#3566B2 #B24235 #A4B235

monochromatic

#193054 #274B83 #3566B2 #5785CD #86A8DB

Accessibility & contrast

On white

5.68

#3566B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3566B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3566B2

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3566B2	#FFFFFF	#000000	##FFFFFF
##3566B2	1.00	5.68	3.69	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#426DB5

Deuteranopia (green-blind)

#2D61B0

Tritanopia (blue-blind)

#007883

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3566b2;
/* rgb */ color: rgb(53, 102, 178);
/* oklch */ color: oklch(51.5% 0.132 258.9);

Tailwind

colors: {
  custom: {
    50: '#7b91c9',
    500: '#3566b2',
    950: '#000000',
  },
}

SCSS

$custom: #3566b2;
$custom-light: #7b91c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3566b2",
  "rgb": {
    "r": 53,
    "g": 102,
    "b": 178
  },
  "hsl": {
    "h": 216.48,
    "s": 54.113,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51539,
    "c": 0.13182,
    "h": 258.9
  },
  "luminance": 0.13474
}

Semantic roles & 50–950 ramp

primary

#3566B2

secondary

#C5A97E

accent

#A44ADD

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3566B2

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

Preview Lab → · Contrast checker → · Palette generator →