#5666B2#5666B2

#5666B2 is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.4% C 0.120 H 272.7°. Best body text is #FFFFFF at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#5666B2
RGB	rgb(86, 102, 178)
HSL	hsl(230, 37%, 52%)
HSV	hsv(230, 52%, 70%)
CMYK	cmyk(51.7%, 42.7%, 0%, 30.2%)
CIE-LAB	lab(45.21, 15.76, -42.40)
CIE-LCH	lch(45.21, 45.24, 290.39°)
OKLab	oklab(53.35% 0.0058 -0.1203)
OKLCH	oklch(53.35% 0.12 272.7)
XYZ	xyz(16.6224, 14.6945, 44.0713)
Luminance	0.1470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5666B2 #B2A256

analogous

#5694B2 #5666B2 #7456B2

triadic

#5666B2 #B25666 #66B256

tetradic

#5666B2 #B25694 #B2A256 #56B274

square

#5666B2 #B25694 #B2A256 #56B274

split-complementary

#5666B2 #B27456 #94B256

monochromatic

#2C3661 #3F4D8B #5666B2 #808CC5 #AAB2D8

Accessibility & contrast

On white

5.33

#5666B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.94

#5666B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5666B2

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5666B2	#FFFFFF	#000000	##FFFFFF
##5666B2	1.00	5.33	3.94	5.33
#FFFFFF	5.33	1.00	21.00	1.00
#000000	3.94	21.00	1.00	21.00
##FFFFFF	5.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#476FB5

Deuteranopia (green-blind)

#3D67B0

Tritanopia (blue-blind)

#2E7683

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #5666b2;
/* rgb */ color: rgb(86, 102, 178);
/* oklch */ color: oklch(53.4% 0.120 272.7);

Tailwind

colors: {
  custom: {
    50: '#8c91c9',
    500: '#5666b2',
    950: '#000000',
  },
}

SCSS

$custom: #5666b2;
$custom-light: #8c91c9;
$custom-dark: #000000;

JSON

{
  "hex": "#5666b2",
  "rgb": {
    "r": 86,
    "g": 102,
    "b": 178
  },
  "hsl": {
    "h": 229.565,
    "s": 37.398,
    "l": 51.765
  },
  "oklch": {
    "l": 0.53351,
    "c": 0.12041,
    "h": 272.7
  },
  "luminance": 0.14696
}

Semantic roles & 50–950 ramp

primary

#5666B2

secondary

#C6BF9E

accent

#B95ACD

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0C13

muted

#7D7D82

Preview Lab

Preview with #5666B2

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

Preview Lab → · Contrast checker → · Palette generator →