#3556BB#3556BB

#3556BB is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.8% C 0.164 H 266.6°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#3556BB
RGB	rgb(53, 86, 187)
HSL	hsl(225, 56%, 47%)
HSV	hsv(225, 72%, 73%)
CMYK	cmyk(71.7%, 54%, 0%, 26.7%)
CIE-LAB	lab(39.58, 22.99, -56.81)
CIE-LCH	lch(39.58, 61.29, 292.03°)
OKLab	oklab(48.75% -0.0097 -0.1635)
OKLCH	oklch(48.75% 0.164 266.6)
XYZ	xyz(13.7625, 10.9989, 48.4018)
Luminance	0.1100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3556BB #BB9A35

analogous

#3599BB #3556BB #5735BB

triadic

#3556BB #BB3556 #56BB35

tetradic

#3556BB #BB3599 #BB9A35 #35BB57

square

#3556BB #BB3599 #BB9A35 #35BB57

split-complementary

#3556BB #BB5735 #99BB35

monochromatic

#1A2A5C #27408B #3556BB #5C79D1 #8CA0DE

Accessibility & contrast

On white

6.56

#3556BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#3556BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3556BB

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3556BB	#FFFFFF	#000000	##FFFFFF
##3556BB	1.00	6.56	3.20	6.56
#FFFFFF	6.56	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0564BF

Deuteranopia (green-blind)

#0057B9

Tritanopia (blue-blind)

#006E80

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3556bb;
/* rgb */ color: rgb(53, 86, 187);
/* oklch */ color: oklch(48.8% 0.164 266.6);

Tailwind

colors: {
  custom: {
    50: '#7e85d0',
    500: '#3556bb',
    950: '#000000',
  },
}

SCSS

$custom: #3556bb;
$custom-light: #7e85d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3556bb",
  "rgb": {
    "r": 53,
    "g": 86,
    "b": 187
  },
  "hsl": {
    "h": 225.224,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.48754,
    "c": 0.16382,
    "h": 266.6
  },
  "luminance": 0.11
}

Semantic roles & 50–950 ramp

primary

#3556BB

secondary

#C9B883

accent

#BA49DF

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3556BB

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

Preview Lab → · Contrast checker → · Palette generator →