#5666E7#5666E7

#5666E7 is a mid, vivid blue. Relative luminance 0.173; OKLCH L 57.0% C 0.194 H 273.2°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#5666E7
RGB	rgb(86, 102, 231)
HSL	hsl(233, 75%, 62%)
HSV	hsv(233, 63%, 91%)
CMYK	cmyk(62.8%, 55.8%, 0%, 9.4%)
CIE-LAB	lab(48.57, 33.29, -67.40)
CIE-LCH	lch(48.57, 75.17, 296.29°)
OKLab	oklab(56.97% 0.011 -0.1937)
OKLCH	oklch(56.97% 0.194 273.2)
XYZ	xyz(23.0081, 17.2487, 77.7027)
Luminance	0.1725 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5666E7 #E7D756

analogous

#56AFE7 #5666E7 #8E56E7

triadic

#5666E7 #E75666 #66E756

tetradic

#5666E7 #E756AF #E7D756 #56E78E

square

#5666E7 #E756AF #E7D756 #56E78E

split-complementary

#5666E7 #E78E56 #AFE756

monochromatic

#1828AA #2035DF #5666E7 #8C97EF #C1C7F6

Accessibility & contrast

On white

4.72

#5666E7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#5666E7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5666E7

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5666E7	#FFFFFF	#000000	##FFFFFF
##5666E7	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AEB

Deuteranopia (green-blind)

#006DE4

Tritanopia (blue-blind)

#00859D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #5666e7;
/* rgb */ color: rgb(86, 102, 231);
/* oklch */ color: oklch(57.0% 0.194 273.2);

Tailwind

colors: {
  custom: {
    50: '#9491ef',
    500: '#5666e7',
    950: '#000000',
  },
}

SCSS

$custom: #5666e7;
$custom-light: #9491ef;
$custom-dark: #000000;

JSON

{
  "hex": "#5666e7",
  "rgb": {
    "r": 86,
    "g": 102,
    "b": 231
  },
  "hsl": {
    "h": 233.379,
    "s": 75.13,
    "l": 62.157
  },
  "oklch": {
    "l": 0.56965,
    "c": 0.19403,
    "h": 273.2
  },
  "luminance": 0.17251
}

Semantic roles & 50–950 ramp

primary

#5666E7

secondary

#E7E1B2

accent

#C10ED7

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C17

muted

#7E7D85

Preview Lab

Preview with #5666E7

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

Preview Lab → · Contrast checker → · Palette generator →