#5666BC#5666BC

#5666BC is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.0% C 0.135 H 273.1°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#5666BC
RGB	rgb(86, 102, 188)
HSL	hsl(231, 43%, 54%)
HSV	hsv(231, 54%, 74%)
CMYK	cmyk(54.3%, 45.7%, 0%, 26.3%)
CIE-LAB	lab(45.79, 19.01, -47.31)
CIE-LCH	lch(45.79, 50.99, 291.89°)
OKLab	oklab(53.97% 0.0074 -0.1347)
OKLCH	oklch(53.97% 0.135 273.1)
XYZ	xyz(17.6633, 15.1108, 49.5531)
Luminance	0.1511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5666BC #BCAC56

analogous

#5699BC #5666BC #7956BC

triadic

#5666BC #BC5666 #66BC56

tetradic

#5666BC #BC5699 #BCAC56 #56BC79

square

#5666BC #BC5699 #BCAC56 #56BC79

split-complementary

#5666BC #BC7956 #99BC56

monochromatic

#2B356D #3C4B98 #5666BC #828ECD #AEB5DF

Accessibility & contrast

On white

5.22

#5666BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#5666BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5666BC

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5666BC	#FFFFFF	#000000	##FFFFFF
##5666BC	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4071BF

Deuteranopia (green-blind)

#3468BA

Tritanopia (blue-blind)

#237988

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #5666bc;
/* rgb */ color: rgb(86, 102, 188);
/* oklch */ color: oklch(54.0% 0.135 273.1);

Tailwind

colors: {
  custom: {
    50: '#8d91d1',
    500: '#5666bc',
    950: '#000000',
  },
}

SCSS

$custom: #5666bc;
$custom-light: #8d91d1;
$custom-dark: #000000;

JSON

{
  "hex": "#5666bc",
  "rgb": {
    "r": 86,
    "g": 102,
    "b": 188
  },
  "hsl": {
    "h": 230.588,
    "s": 43.22,
    "l": 53.725
  },
  "oklch": {
    "l": 0.53974,
    "c": 0.13486,
    "h": 273.1
  },
  "luminance": 0.15112
}

Semantic roles & 50–950 ramp

primary

#5666BC

secondary

#CDC6A1

accent

#BF55D3

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0C14

muted

#7E7D82

Preview Lab

Preview with #5666BC

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

Preview Lab → · Contrast checker → · Palette generator →