#5666BB#5666BB

#5666BB is a mid, vivid blue. Relative luminance 0.151; OKLCH L 53.9% C 0.133 H 273.1°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#5666BB
RGB	rgb(86, 102, 187)
HSL	hsl(230, 43%, 54%)
HSV	hsv(230, 54%, 73%)
CMYK	cmyk(54%, 45.5%, 0%, 26.7%)
CIE-LAB	lab(45.73, 18.69, -46.83)
CIE-LCH	lch(45.73, 50.42, 291.76°)
OKLab	oklab(53.91% 0.0073 -0.1332)
OKLCH	oklch(53.91% 0.133 273.1)
XYZ	xyz(17.5559, 15.0678, 48.9873)
Luminance	0.1507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5666BB #BBAB56

analogous

#5698BB #5666BB #7856BB

triadic

#5666BB #BB5666 #66BB56

tetradic

#5666BB #BB5698 #BBAB56 #56BB78

square

#5666BB #BB5698 #BBAB56 #56BB78

split-complementary

#5666BB #BB7856 #98BB56

monochromatic

#2B356B #3D4B97 #5666BB #828ECD #ADB5DE

Accessibility & contrast

On white

5.23

#5666BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#5666BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5666BB

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5666BB	#FFFFFF	#000000	##FFFFFF
##5666BB	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4171BE

Deuteranopia (green-blind)

#3568B9

Tritanopia (blue-blind)

#247987

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #5666bb;
/* rgb */ color: rgb(86, 102, 187);
/* oklch */ color: oklch(53.9% 0.133 273.1);

Tailwind

colors: {
  custom: {
    50: '#8d91d0',
    500: '#5666bb',
    950: '#000000',
  },
}

SCSS

$custom: #5666bb;
$custom-light: #8d91d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5666bb",
  "rgb": {
    "r": 86,
    "g": 102,
    "b": 187
  },
  "hsl": {
    "h": 230.495,
    "s": 42.616,
    "l": 53.529
  },
  "oklch": {
    "l": 0.53911,
    "c": 0.13343,
    "h": 273.1
  },
  "luminance": 0.15069
}

Semantic roles & 50–950 ramp

primary

#5666BB

secondary

#CCC5A1

accent

#BF55D2

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0C14

muted

#7E7D82

Preview Lab

Preview with #5666BB

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

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