#3559B9#3559B9

#3559B9 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.2% C 0.157 H 265.5°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#3559B9
RGB	rgb(53, 89, 185)
HSL	hsl(224, 55%, 47%)
HSV	hsv(224, 71%, 73%)
CMYK	cmyk(71.4%, 51.9%, 0%, 27.5%)
CIE-LAB	lab(40.25, 20.30, -54.55)
CIE-LCH	lch(40.25, 58.21, 290.41°)
OKLab	oklab(49.22% -0.0124 -0.1568)
OKLCH	oklch(49.22% 0.157 265.5)
XYZ	xyz(13.7945, 11.4030, 47.3635)
Luminance	0.1140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3559B9 #B99535

analogous

#359BB9 #3559B9 #5335B9

triadic

#3559B9 #B93559 #59B935

tetradic

#3559B9 #B9359B #B99535 #35B953

square

#3559B9 #B9359B #B99535 #35B953

split-complementary

#3559B9 #B95335 #9BB935

monochromatic

#1A2B5A #274289 #3559B9 #5B7BD0 #8BA1DE

Accessibility & contrast

On white

6.40

#3559B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3559B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3559B9

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3559B9	#FFFFFF	#000000	##FFFFFF
##3559B9	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B65BC

Deuteranopia (green-blind)

#0059B7

Tritanopia (blue-blind)

#007080

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3559b9;
/* rgb */ color: rgb(53, 89, 185);
/* oklch */ color: oklch(49.2% 0.157 265.5);

Tailwind

colors: {
  custom: {
    50: '#7d87cf',
    500: '#3559b9',
    950: '#000000',
  },
}

SCSS

$custom: #3559b9;
$custom-light: #7d87cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3559b9",
  "rgb": {
    "r": 53,
    "g": 89,
    "b": 185
  },
  "hsl": {
    "h": 223.636,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.49218,
    "c": 0.15732,
    "h": 265.5
  },
  "luminance": 0.11404
}

Semantic roles & 50–950 ramp

primary

#3559B9

secondary

#C8B582

accent

#B649DF

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3559B9

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

Preview Lab → · Contrast checker → · Palette generator →