#3563B9#3563B9

#3563B9 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.3% C 0.145 H 261.6°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#3563B9
RGB	rgb(53, 99, 185)
HSL	hsl(219, 55%, 47%)
HSV	hsv(219, 71%, 73%)
CMYK	cmyk(71.4%, 46.5%, 0%, 27.5%)
CIE-LAB	lab(43.04, 13.82, -50.07)
CIE-LCH	lch(43.04, 51.94, 285.44°)
OKLab	oklab(51.35% -0.0212 -0.1435)
OKLCH	oklch(51.35% 0.145 261.6)
XYZ	xyz(14.6839, 13.1818, 47.6600)
Luminance	0.1318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3563B9 #B98B35

analogous

#35A5B9 #3563B9 #4935B9

triadic

#3563B9 #B93563 #63B935

tetradic

#3563B9 #B935A5 #B98B35 #35B949

square

#3563B9 #B935A5 #B98B35 #35B949

split-complementary

#3563B9 #B94935 #A5B935

monochromatic

#1A305A #274A89 #3563B9 #5B84D0 #8BA8DE

Accessibility & contrast

On white

5.77

#3563B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#3563B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3563B9

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3563B9	#FFFFFF	#000000	##FFFFFF
##3563B9	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366CBC

Deuteranopia (green-blind)

#1960B7

Tritanopia (blue-blind)

#007785

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3563b9;
/* rgb */ color: rgb(53, 99, 185);
/* oklch */ color: oklch(51.3% 0.145 261.6);

Tailwind

colors: {
  custom: {
    50: '#7c8ece',
    500: '#3563b9',
    950: '#000000',
  },
}

SCSS

$custom: #3563b9;
$custom-light: #7c8ece;
$custom-dark: #000000;

JSON

{
  "hex": "#3563b9",
  "rgb": {
    "r": 53,
    "g": 99,
    "b": 185
  },
  "hsl": {
    "h": 219.091,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.51345,
    "c": 0.14502,
    "h": 261.6
  },
  "luminance": 0.13183
}

Semantic roles & 50–950 ramp

primary

#3563B9

secondary

#C8B082

accent

#AB49DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3563B9

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

Preview Lab → · Contrast checker → · Palette generator →