#5666DD#5666DD

#5666DD is a mid, vivid blue. Relative luminance 0.167; OKLCH L 56.2% C 0.181 H 273.4°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#5666DD
RGB	rgb(86, 102, 221)
HSL	hsl(233, 67%, 60%)
HSV	hsv(233, 61%, 87%)
CMYK	cmyk(61.1%, 53.8%, 0%, 13.3%)
CIE-LAB	lab(47.88, 29.95, -62.87)
CIE-LCH	lch(47.88, 69.64, 295.47°)
OKLab	oklab(56.23% 0.0106 -0.1804)
OKLCH	oklch(56.23% 0.181 273.4)
XYZ	xyz(21.6360, 16.6999, 70.4758)
Luminance	0.1670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5666DD #DDCD56

analogous

#56A9DD #5666DD #8A56DD

triadic

#5666DD #DD5666 #66DD56

tetradic

#5666DD #DD56A9 #DDCD56 #56DD8A

square

#5666DD #DD56A9 #DDCD56 #56DD8A

split-complementary

#5666DD #DD8A56 #A9DD56

monochromatic

#1F2D9A #293DCD #5666DD #8994E7 #BCC2F2

Accessibility & contrast

On white

4.84

#5666DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#5666DD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5666DD

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5666DD	#FFFFFF	#000000	##FFFFFF
##5666DD	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1278E1

Deuteranopia (green-blind)

#006CDB

Tritanopia (blue-blind)

#008298

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #5666dd;
/* rgb */ color: rgb(86, 102, 221);
/* oklch */ color: oklch(56.2% 0.181 273.4);

Tailwind

colors: {
  custom: {
    50: '#9291e8',
    500: '#5666dd',
    950: '#000000',
  },
}

SCSS

$custom: #5666dd;
$custom-light: #9291e8;
$custom-dark: #000000;

JSON

{
  "hex": "#5666dd",
  "rgb": {
    "r": 86,
    "g": 102,
    "b": 221
  },
  "hsl": {
    "h": 232.889,
    "s": 66.502,
    "l": 60.196
  },
  "oklch": {
    "l": 0.56228,
    "c": 0.18071,
    "h": 273.4
  },
  "luminance": 0.16702
}

Semantic roles & 50–950 ramp

primary

#5666DD

secondary

#E1DBAE

accent

#B917CE

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5666DD

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

Preview Lab → · Contrast checker → · Palette generator →