#5666E1#5666E1

#5666E1 is a mid, vivid blue. Relative luminance 0.169; OKLCH L 56.5% C 0.186 H 273.3°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#5666E1
RGB	rgb(86, 102, 225)
HSL	hsl(233, 70%, 61%)
HSV	hsv(233, 62%, 88%)
CMYK	cmyk(61.8%, 54.7%, 0%, 11.8%)
CIE-LAB	lab(48.15, 31.28, -64.69)
CIE-LCH	lch(48.15, 71.86, 295.81°)
OKLab	oklab(56.52% 0.0108 -0.1858)
OKLCH	oklch(56.52% 0.186 273.3)
XYZ	xyz(22.1752, 16.9156, 73.3160)
Luminance	0.1692 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5666E1 #E1D156

analogous

#56ABE1 #5666E1 #8B56E1

triadic

#5666E1 #E15666 #66E156

tetradic

#5666E1 #E156AB #E1D156 #56E18B

square

#5666E1 #E156AB #E1D156 #56E18B

split-complementary

#5666E1 #E18B56 #ABE156

monochromatic

#1C2CA0 #263AD4 #5666E1 #8A95EA #BEC4F3

Accessibility & contrast

On white

4.79

#5666E1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#5666E1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5666E1

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5666E1	#FFFFFF	#000000	##FFFFFF
##5666E1	1.00	4.79	4.38	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079E5

Deuteranopia (green-blind)

#006CDE

Tritanopia (blue-blind)

#00839A

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #5666e1;
/* rgb */ color: rgb(86, 102, 225);
/* oklch */ color: oklch(56.5% 0.186 273.3);

Tailwind

colors: {
  custom: {
    50: '#9391eb',
    500: '#5666e1',
    950: '#000000',
  },
}

SCSS

$custom: #5666e1;
$custom-light: #9391eb;
$custom-dark: #000000;

JSON

{
  "hex": "#5666e1",
  "rgb": {
    "r": 86,
    "g": 102,
    "b": 225
  },
  "hsl": {
    "h": 233.094,
    "s": 69.849,
    "l": 60.98
  },
  "oklch": {
    "l": 0.5652,
    "c": 0.18607,
    "h": 273.3
  },
  "luminance": 0.16917
}

Semantic roles & 50–950 ramp

primary

#5666E1

secondary

#E4DEAF

accent

#BC14D2

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5666E1

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

Preview Lab → · Contrast checker → · Palette generator →