#3559AB#3559AB

#3559AB is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.2% C 0.138 H 264.1°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#3559AB
RGB	rgb(53, 89, 171)
HSL	hsl(222, 53%, 44%)
HSV	hsv(222, 69%, 67%)
CMYK	cmyk(69%, 48%, 0%, 32.9%)
CIE-LAB	lab(39.31, 15.10, -47.83)
CIE-LCH	lch(39.31, 50.16, 287.53°)
OKLab	oklab(48.2% -0.0142 -0.137)
OKLCH	oklch(48.2% 0.138 264.1)
XYZ	xyz(12.3887, 10.8407, 39.9597)
Luminance	0.1084 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3559AB #AB8735

analogous

#3594AB #3559AB #4C35AB

triadic

#3559AB #AB3559 #59AB35

tetradic

#3559AB #AB3594 #AB8735 #35AB4C

square

#3559AB #AB3594 #AB8735 #35AB4C

split-complementary

#3559AB #AB4C35 #94AB35

monochromatic

#18284E #27417C #3559AB #5378CA #829CD8

Accessibility & contrast

On white

6.63

#3559AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#3559AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3559AB

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3559AB	#FFFFFF	#000000	##FFFFFF
##3559AB	1.00	6.63	3.17	6.63
#FFFFFF	6.63	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E62AE

Deuteranopia (green-blind)

#1258A9

Tritanopia (blue-blind)

#006C7A

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3559ab;
/* rgb */ color: rgb(53, 89, 171);
/* oklch */ color: oklch(48.2% 0.138 264.1);

Tailwind

colors: {
  custom: {
    50: '#7a87c4',
    500: '#3559ab',
    950: '#000000',
  },
}

SCSS

$custom: #3559ab;
$custom-light: #7a87c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3559ab",
  "rgb": {
    "r": 53,
    "g": 89,
    "b": 171
  },
  "hsl": {
    "h": 221.695,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.48201,
    "c": 0.13777,
    "h": 264.1
  },
  "luminance": 0.10842
}

Semantic roles & 50–950 ramp

primary

#3559AB

secondary

#C2AC7A

accent

#B04CDC

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3559AB

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

Preview Lab → · Contrast checker → · Palette generator →