#5666CD#5666CD

#5666CD is a mid, vivid blue. Relative luminance 0.159; OKLCH L 55.1% C 0.159 H 273.4°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#5666CD
RGB	rgb(86, 102, 205)
HSL	hsl(232, 54%, 57%)
HSV	hsv(232, 58%, 80%)
CMYK	cmyk(58%, 50.2%, 0%, 19.6%)
CIE-LAB	lab(46.83, 24.62, -55.45)
CIE-LCH	lch(46.83, 60.67, 293.94°)
OKLab	oklab(55.1% 0.0095 -0.1586)
OKLCH	oklch(55.1% 0.159 273.4)
XYZ	xyz(19.6050, 15.8875, 59.7792)
Luminance	0.1589 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5666CD #CDBD56

analogous

#56A1CD #5666CD #8256CD

triadic

#5666CD #CD5666 #66CD56

tetradic

#5666CD #CD56A1 #CDBD56 #56CD82

square

#5666CD #CD56A1 #CDBD56 #56CD82

split-complementary

#5666CD #CD8256 #A1CD56

monochromatic

#263382 #3445B1 #5666CD #8591DB #B4BCE9

Accessibility & contrast

On white

5.03

#5666CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#5666CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5666CD

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5666CD	#FFFFFF	#000000	##FFFFFF
##5666CD	1.00	5.03	4.18	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F74D1

Deuteranopia (green-blind)

#186ACB

Tritanopia (blue-blind)

#007D90

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #5666cd;
/* rgb */ color: rgb(86, 102, 205);
/* oklch */ color: oklch(55.1% 0.159 273.4);

Tailwind

colors: {
  custom: {
    50: '#8f91dd',
    500: '#5666cd',
    950: '#000000',
  },
}

SCSS

$custom: #5666cd;
$custom-light: #8f91dd;
$custom-dark: #000000;

JSON

{
  "hex": "#5666cd",
  "rgb": {
    "r": 86,
    "g": 102,
    "b": 205
  },
  "hsl": {
    "h": 231.933,
    "s": 54.338,
    "l": 57.059
  },
  "oklch": {
    "l": 0.55099,
    "c": 0.15884,
    "h": 273.4
  },
  "luminance": 0.15889
}

Semantic roles & 50–950 ramp

primary

#5666CD

secondary

#D8D1A7

accent

#CA4ADE

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #5666CD

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

Preview Lab → · Contrast checker → · Palette generator →