#5666CC#5666CC

#5666CC is a mid, vivid blue. Relative luminance 0.158; OKLCH L 55.0% C 0.157 H 273.4°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#5666CC
RGB	rgb(86, 102, 204)
HSL	hsl(232, 54%, 57%)
HSV	hsv(232, 58%, 80%)
CMYK	cmyk(57.8%, 50%, 0%, 20%)
CIE-LAB	lab(46.76, 24.29, -54.97)
CIE-LCH	lch(46.76, 60.10, 293.84°)
OKLab	oklab(55.03% 0.0094 -0.1572)
OKLCH	oklch(55.03% 0.157 273.4)
XYZ	xyz(19.4846, 15.8393, 59.1456)
Luminance	0.1584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5666CC #CCBC56

analogous

#56A1CC #5666CC #8156CC

triadic

#5666CC #CC5666 #66CC56

tetradic

#5666CC #CC56A1 #CCBC56 #56CC81

square

#5666CC #CC56A1 #CCBC56 #56CC81

split-complementary

#5666CC #CC8156 #A1CC56

monochromatic

#273381 #3546B0 #5666CC #8591DA #B4BBE8

Accessibility & contrast

On white

5.04

#5666CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#5666CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5666CC

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5666CC	#FFFFFF	#000000	##FFFFFF
##5666CC	1.00	5.04	4.17	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3174D0

Deuteranopia (green-blind)

#1B6ACA

Tritanopia (blue-blind)

#007D8F

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #5666cc;
/* rgb */ color: rgb(86, 102, 204);
/* oklch */ color: oklch(55.0% 0.157 273.4);

Tailwind

colors: {
  custom: {
    50: '#8f91dc',
    500: '#5666cc',
    950: '#000000',
  },
}

SCSS

$custom: #5666cc;
$custom-light: #8f91dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5666cc",
  "rgb": {
    "r": 86,
    "g": 102,
    "b": 204
  },
  "hsl": {
    "h": 231.864,
    "s": 53.636,
    "l": 56.863
  },
  "oklch": {
    "l": 0.55031,
    "c": 0.15746,
    "h": 273.4
  },
  "luminance": 0.15841
}

Semantic roles & 50–950 ramp

primary

#5666CC

secondary

#D7D0A7

accent

#C94BDD

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #5666CC

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

Preview Lab → · Contrast checker → · Palette generator →