#3563BB#3563BB

#3563BB is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.5% C 0.148 H 261.9°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#3563BB
RGB	rgb(53, 99, 187)
HSL	hsl(219, 56%, 47%)
HSV	hsv(219, 72%, 73%)
CMYK	cmyk(71.7%, 47.1%, 0%, 26.7%)
CIE-LAB	lab(43.16, 14.57, -51.03)
CIE-LCH	lch(43.16, 53.07, 285.93°)
OKLab	oklab(51.48% -0.0209 -0.1463)
OKLCH	oklch(51.48% 0.148 261.9)
XYZ	xyz(14.8965, 13.2668, 48.7798)
Luminance	0.1327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3563BB #BB8D35

analogous

#35A6BB #3563BB #4A35BB

triadic

#3563BB #BB3563 #63BB35

tetradic

#3563BB #BB35A6 #BB8D35 #35BB4A

square

#3563BB #BB35A6 #BB8D35 #35BB4A

split-complementary

#3563BB #BB4A35 #A6BB35

monochromatic

#1A315C #274A8B #3563BB #5C84D1 #8CA8DE

Accessibility & contrast

On white

5.75

#3563BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#3563BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3563BB

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3563BB	#FFFFFF	#000000	##FFFFFF
##3563BB	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#346DBE

Deuteranopia (green-blind)

#1460B9

Tritanopia (blue-blind)

#007886

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3563bb;
/* rgb */ color: rgb(53, 99, 187);
/* oklch */ color: oklch(51.5% 0.148 261.9);

Tailwind

colors: {
  custom: {
    50: '#7d8ed0',
    500: '#3563bb',
    950: '#000000',
  },
}

SCSS

$custom: #3563bb;
$custom-light: #7d8ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#3563bb",
  "rgb": {
    "r": 53,
    "g": 99,
    "b": 187
  },
  "hsl": {
    "h": 219.403,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.51483,
    "c": 0.14777,
    "h": 261.9
  },
  "luminance": 0.13268
}

Semantic roles & 50–950 ramp

primary

#3563BB

secondary

#C9B183

accent

#AB49DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3563BB

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

Preview Lab → · Contrast checker → · Palette generator →