#5666D9#5666D9

#5666D9 is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.9% C 0.175 H 273.4°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#5666D9
RGB	rgb(86, 102, 217)
HSL	hsl(233, 63%, 59%)
HSV	hsv(233, 60%, 85%)
CMYK	cmyk(60.4%, 53%, 0%, 14.9%)
CIE-LAB	lab(47.61, 28.61, -61.03)
CIE-LCH	lch(47.61, 67.41, 295.12°)
OKLab	oklab(55.94% 0.0104 -0.175)
OKLCH	oklch(55.94% 0.175 273.4)
XYZ	xyz(21.1094, 16.4892, 67.7025)
Luminance	0.1649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5666D9 #D9C956

analogous

#56A7D9 #5666D9 #8856D9

triadic

#5666D9 #D95666 #66D956

tetradic

#5666D9 #D956A7 #D9C956 #56D988

square

#5666D9 #D956A7 #D9C956 #56D988

split-complementary

#5666D9 #D98856 #A7D956

monochromatic

#212F93 #2C3FC5 #5666D9 #8893E4 #BAC0EF

Accessibility & contrast

On white

4.89

#5666D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#5666D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5666D9

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5666D9	#FFFFFF	#000000	##FFFFFF
##5666D9	1.00	4.89	4.30	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C77DD

Deuteranopia (green-blind)

#006BD7

Tritanopia (blue-blind)

#008196

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #5666d9;
/* rgb */ color: rgb(86, 102, 217);
/* oklch */ color: oklch(55.9% 0.175 273.4);

Tailwind

colors: {
  custom: {
    50: '#9191e5',
    500: '#5666d9',
    950: '#000000',
  },
}

SCSS

$custom: #5666d9;
$custom-light: #9191e5;
$custom-dark: #000000;

JSON

{
  "hex": "#5666d9",
  "rgb": {
    "r": 86,
    "g": 102,
    "b": 217
  },
  "hsl": {
    "h": 232.672,
    "s": 63.285,
    "l": 59.412
  },
  "oklch": {
    "l": 0.5594,
    "c": 0.17531,
    "h": 273.4
  },
  "luminance": 0.16491
}

Semantic roles & 50–950 ramp

primary

#5666D9

secondary

#DFD9AC

accent

#D241E6

background

#F9F8FE

surface

#F2F0FC

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5666D9

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

Preview Lab → · Contrast checker → · Palette generator →