#3563B8#3563B8

#3563B8 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.3% C 0.144 H 261.4°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#3563B8
RGB	rgb(53, 99, 184)
HSL	hsl(219, 55%, 46%)
HSV	hsv(219, 71%, 72%)
CMYK	cmyk(71.2%, 46.2%, 0%, 27.8%)
CIE-LAB	lab(42.97, 13.45, -49.59)
CIE-LCH	lch(42.97, 51.38, 285.18°)
OKLab	oklab(51.28% -0.0214 -0.142)
OKLCH	oklch(51.28% 0.144 261.4)
XYZ	xyz(14.5787, 13.1397, 47.1060)
Luminance	0.1314 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3563B8 #B88A35

analogous

#35A5B8 #3563B8 #4935B8

triadic

#3563B8 #B83563 #63B835

tetradic

#3563B8 #B835A5 #B88A35 #35B849

square

#3563B8 #B835A5 #B88A35 #35B849

split-complementary

#3563B8 #B84935 #A5B835

monochromatic

#1A3059 #274988 #3563B8 #5B84D0 #8AA7DD

Accessibility & contrast

On white

5.79

#3563B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#3563B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3563B8

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3563B8	#FFFFFF	#000000	##FFFFFF
##3563B8	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#376CBB

Deuteranopia (green-blind)

#1B60B6

Tritanopia (blue-blind)

#007784

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3563b8;
/* rgb */ color: rgb(53, 99, 184);
/* oklch */ color: oklch(51.3% 0.144 261.4);

Tailwind

colors: {
  custom: {
    50: '#7c8ece',
    500: '#3563b8',
    950: '#000000',
  },
}

SCSS

$custom: #3563b8;
$custom-light: #7c8ece;
$custom-dark: #000000;

JSON

{
  "hex": "#3563b8",
  "rgb": {
    "r": 53,
    "g": 99,
    "b": 184
  },
  "hsl": {
    "h": 218.931,
    "s": 55.274,
    "l": 46.471
  },
  "oklch": {
    "l": 0.51277,
    "c": 0.14365,
    "h": 261.4
  },
  "luminance": 0.13141
}

Semantic roles & 50–950 ramp

primary

#3563B8

secondary

#C7AF81

accent

#AA49DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3563B8

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

Preview Lab → · Contrast checker → · Palette generator →