#3563B3#3563B3

#3563B3 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 50.9% C 0.137 H 260.6°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#3563B3
RGB	rgb(53, 99, 179)
HSL	hsl(218, 54%, 45%)
HSV	hsv(218, 70%, 70%)
CMYK	cmyk(70.4%, 44.7%, 0%, 29.8%)
CIE-LAB	lab(42.66, 11.60, -47.16)
CIE-LCH	lch(42.66, 48.57, 283.82°)
OKLab	oklab(50.94% -0.0222 -0.1349)
OKLCH	oklch(50.94% 0.137 260.6)
XYZ	xyz(14.0638, 12.9338, 44.3944)
Luminance	0.1293 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3563B3 #B38535

analogous

#35A2B3 #3563B3 #4635B3

triadic

#3563B3 #B33563 #63B335

tetradic

#3563B3 #B335A2 #B38535 #35B346

square

#3563B3 #B335A2 #B38535 #35B346

split-complementary

#3563B3 #B34635 #A2B335

monochromatic

#192F55 #274984 #3563B3 #5883CD #87A6DB

Accessibility & contrast

On white

5.85

#3563B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#3563B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3563B3

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3563B3	#FFFFFF	#000000	##FFFFFF
##3563B3	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6BB6

Deuteranopia (green-blind)

#245FB1

Tritanopia (blue-blind)

#007682

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3563b3;
/* rgb */ color: rgb(53, 99, 179);
/* oklch */ color: oklch(50.9% 0.137 260.6);

Tailwind

colors: {
  custom: {
    50: '#7b8eca',
    500: '#3563b3',
    950: '#000000',
  },
}

SCSS

$custom: #3563b3;
$custom-light: #7b8eca;
$custom-dark: #000000;

JSON

{
  "hex": "#3563b3",
  "rgb": {
    "r": 53,
    "g": 99,
    "b": 179
  },
  "hsl": {
    "h": 218.095,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.50938,
    "c": 0.13673,
    "h": 260.6
  },
  "luminance": 0.12935
}

Semantic roles & 50–950 ramp

primary

#3563B3

secondary

#C5AB7F

accent

#A84ADE

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3563B3

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

Preview Lab → · Contrast checker → · Palette generator →