#3559BB#3559BB

#3559BB is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.4% C 0.160 H 265.6°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#3559BB
RGB	rgb(53, 89, 187)
HSL	hsl(224, 56%, 47%)
HSV	hsv(224, 72%, 73%)
CMYK	cmyk(71.7%, 52.4%, 0%, 26.7%)
CIE-LAB	lab(40.39, 21.04, -55.50)
CIE-LCH	lch(40.39, 59.35, 290.76°)
OKLab	oklab(49.37% -0.0122 -0.1596)
OKLCH	oklch(49.37% 0.16 265.6)
XYZ	xyz(14.0071, 11.4880, 48.4833)
Luminance	0.1149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3559BB #BB9735

analogous

#359CBB #3559BB #5435BB

triadic

#3559BB #BB3559 #59BB35

tetradic

#3559BB #BB359C #BB9735 #35BB54

square

#3559BB #BB359C #BB9735 #35BB54

split-complementary

#3559BB #BB5435 #9CBB35

monochromatic

#1A2C5C #27428B #3559BB #5C7CD1 #8CA2DE

Accessibility & contrast

On white

6.37

#3559BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#3559BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3559BB

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3559BB	#FFFFFF	#000000	##FFFFFF
##3559BB	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1766BE

Deuteranopia (green-blind)

#0059B9

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3559bb;
/* rgb */ color: rgb(53, 89, 187);
/* oklch */ color: oklch(49.4% 0.160 265.6);

Tailwind

colors: {
  custom: {
    50: '#7d87d0',
    500: '#3559bb',
    950: '#000000',
  },
}

SCSS

$custom: #3559bb;
$custom-light: #7d87d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3559bb",
  "rgb": {
    "r": 53,
    "g": 89,
    "b": 187
  },
  "hsl": {
    "h": 223.881,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.49368,
    "c": 0.16008,
    "h": 265.6
  },
  "luminance": 0.11489
}

Semantic roles & 50–950 ramp

primary

#3559BB

secondary

#C9B683

accent

#B749DF

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3559BB

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

Preview Lab → · Contrast checker → · Palette generator →