#566FDB#566FDB

#566FDB is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.8% C 0.167 H 270.6°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#566FDB
RGB	rgb(86, 111, 219)
HSL	hsl(229, 65%, 60%)
HSV	hsv(229, 61%, 86%)
CMYK	cmyk(60.7%, 49.3%, 0%, 14.1%)
CIE-LAB	lab(50.05, 23.71, -58.23)
CIE-LCH	lch(50.05, 62.88, 292.15°)
OKLab	oklab(57.82% 0.0018 -0.1667)
OKLCH	oklch(57.82% 0.167 270.6)
XYZ	xyz(22.3041, 18.4599, 69.3918)
Luminance	0.1846 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#566FDB #DBC256

analogous

#56B1DB #566FDB #8056DB

triadic

#566FDB #DB566F #6FDB56

tetradic

#566FDB #DB56B1 #DBC256 #56DB80

square

#566FDB #DB56B1 #DBC256 #56DB80

split-complementary

#566FDB #DB8056 #B1DB56

monochromatic

#203697 #2B49C9 #566FDB #889AE6 #BBC5F0

Accessibility & contrast

On white

4.48

#566FDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#566FDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #566FDB

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##566FDB	#FFFFFF	#000000	##000000
##566FDB	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#367DDF

Deuteranopia (green-blind)

#1971D9

Tritanopia (blue-blind)

#00889B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #566fdb;
/* rgb */ color: rgb(86, 111, 219);
/* oklch */ color: oklch(57.8% 0.167 270.6);

Tailwind

colors: {
  custom: {
    50: '#9198e7',
    500: '#566fdb',
    950: '#000000',
  },
}

SCSS

$custom: #566fdb;
$custom-light: #9198e7;
$custom-dark: #000000;

JSON

{
  "hex": "#566fdb",
  "rgb": {
    "r": 86,
    "g": 111,
    "b": 219
  },
  "hsl": {
    "h": 228.722,
    "s": 64.878,
    "l": 59.804
  },
  "oklch": {
    "l": 0.57822,
    "c": 0.16667,
    "h": 270.6
  },
  "luminance": 0.18462
}

Semantic roles & 50–950 ramp

primary

#566FDB

secondary

#E0D6AD

accent

#C840E8

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #566FDB

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

Preview Lab → · Contrast checker → · Palette generator →