#5666CB#5666CB

#5666CB is a mid, vivid blue. Relative luminance 0.158; OKLCH L 55.0% C 0.156 H 273.4°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#5666CB
RGB	rgb(86, 102, 203)
HSL	hsl(232, 53%, 57%)
HSV	hsv(232, 58%, 80%)
CMYK	cmyk(57.6%, 49.8%, 0%, 20.4%)
CIE-LAB	lab(46.70, 23.96, -54.50)
CIE-LCH	lch(46.70, 59.54, 293.73°)
OKLab	oklab(54.96% 0.0093 -0.1558)
OKLCH	oklch(54.96% 0.156 273.4)
XYZ	xyz(19.3651, 15.7915, 58.5159)
Luminance	0.1579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5666CB #CBBB56

analogous

#56A1CB #5666CB #8156CB

triadic

#5666CB #CB5666 #66CB56

tetradic

#5666CB #CB56A1 #CBBB56 #56CB81

square

#5666CB #CB56A1 #CBBB56 #56CB81

split-complementary

#5666CB #CB8156 #A1CB56

monochromatic

#27337F #3646AE #5666CB #8590D9 #B4BBE8

Accessibility & contrast

On white

5.05

#5666CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#5666CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5666CB

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5666CB	#FFFFFF	#000000	##FFFFFF
##5666CB	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3274CF

Deuteranopia (green-blind)

#1D6AC9

Tritanopia (blue-blind)

#007D8F

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #5666cb;
/* rgb */ color: rgb(86, 102, 203);
/* oklch */ color: oklch(55.0% 0.156 273.4);

Tailwind

colors: {
  custom: {
    50: '#8f91db',
    500: '#5666cb',
    950: '#000000',
  },
}

SCSS

$custom: #5666cb;
$custom-light: #8f91db;
$custom-dark: #000000;

JSON

{
  "hex": "#5666cb",
  "rgb": {
    "r": 86,
    "g": 102,
    "b": 203
  },
  "hsl": {
    "h": 231.795,
    "s": 52.941,
    "l": 56.667
  },
  "oklch": {
    "l": 0.54963,
    "c": 0.15606,
    "h": 273.4
  },
  "luminance": 0.15793
}

Semantic roles & 50–950 ramp

primary

#5666CB

secondary

#D6D0A6

accent

#C94BDC

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #5666CB

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

Preview Lab → · Contrast checker → · Palette generator →