#5866CC#5866CC

#5866CC is a mid, vivid blue. Relative luminance 0.159; OKLCH L 55.2% C 0.157 H 274.2°. Best body text is #FFFFFF at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#5866CC
RGB	rgb(88, 102, 204)
HSL	hsl(233, 53%, 57%)
HSV	hsv(233, 57%, 80%)
CMYK	cmyk(56.9%, 50%, 0%, 20%)
CIE-LAB	lab(46.89, 24.68, -54.76)
CIE-LCH	lch(46.89, 60.07, 294.26°)
OKLab	oklab(55.16% 0.0115 -0.1565)
OKLCH	oklch(55.16% 0.157 274.2)
XYZ	xyz(19.6714, 15.9356, 59.1543)
Luminance	0.1594 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5866CC #CCBE58

analogous

#58A0CC #5866CC #8458CC

triadic

#5866CC #CC5866 #66CC58

tetradic

#5866CC #CC58A0 #CCBE58 #58CC84

square

#5866CC #CC58A0 #CCBE58 #58CC84

split-complementary

#5866CC #CC8458 #A0CC58

monochromatic

#283382 #3645B1 #5866CC #8791DA #B6BCE9

Accessibility & contrast

On white

5.02

#5866CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#5866CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5866CC

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5866CC	#FFFFFF	#000000	##FFFFFF
##5866CC	1.00	5.02	4.19	5.02
#FFFFFF	5.02	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3174D0

Deuteranopia (green-blind)

#1D6ACA

Tritanopia (blue-blind)

#0E7D8F

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #5866cc;
/* rgb */ color: rgb(88, 102, 204);
/* oklch */ color: oklch(55.2% 0.157 274.2);

Tailwind

colors: {
  custom: {
    50: '#9091dc',
    500: '#5866cc',
    950: '#000000',
  },
}

SCSS

$custom: #5866cc;
$custom-light: #9091dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5866cc",
  "rgb": {
    "r": 88,
    "g": 102,
    "b": 204
  },
  "hsl": {
    "h": 232.759,
    "s": 53.211,
    "l": 57.255
  },
  "oklch": {
    "l": 0.5516,
    "c": 0.15693,
    "h": 274.2
  },
  "luminance": 0.15937
}

Semantic roles & 50–950 ramp

primary

#5866CC

secondary

#D7D2A8

accent

#CB4BDD

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #5866CC

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

Preview Lab → · Contrast checker → · Palette generator →