#5566DC#5566DC

#5566DC is a mid, vivid blue. Relative luminance 0.166; OKLCH L 56.1% C 0.180 H 273.0°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#5566DC
RGB	rgb(85, 102, 220)
HSL	hsl(232, 66%, 60%)
HSV	hsv(232, 61%, 86%)
CMYK	cmyk(61.4%, 53.6%, 0%, 13.7%)
CIE-LAB	lab(47.75, 29.44, -62.51)
CIE-LCH	lch(47.75, 69.10, 295.22°)
OKLab	oklab(56.09% 0.0095 -0.1794)
OKLCH	oklch(56.09% 0.18 273)
XYZ	xyz(21.4117, 16.5996, 69.7720)
Luminance	0.1660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5566DC #DCCB55

analogous

#55AADC #5566DC #8755DC

triadic

#5566DC #DC5566 #66DC55

tetradic

#5566DC #DC55AA #DCCB55 #55DC87

square

#5566DC #DC55AA #DCCB55 #55DC87

split-complementary

#5566DC #DC8755 #AADC55

monochromatic

#1F2E97 #2A3ECA #5566DC #8894E6 #BBC1F1

Accessibility & contrast

On white

4.86

#5566DC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#5566DC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5566DC

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5566DC	#FFFFFF	#000000	##FFFFFF
##5566DC	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1477E0

Deuteranopia (green-blind)

#006CDA

Tritanopia (blue-blind)

#008297

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #5566dc;
/* rgb */ color: rgb(85, 102, 220);
/* oklch */ color: oklch(56.1% 0.180 273.0);

Tailwind

colors: {
  custom: {
    50: '#9191e8',
    500: '#5566dc',
    950: '#000000',
  },
}

SCSS

$custom: #5566dc;
$custom-light: #9191e8;
$custom-dark: #000000;

JSON

{
  "hex": "#5566dc",
  "rgb": {
    "r": 85,
    "g": 102,
    "b": 220
  },
  "hsl": {
    "h": 232.444,
    "s": 65.854,
    "l": 59.804
  },
  "oklch": {
    "l": 0.56094,
    "c": 0.17962,
    "h": 273
  },
  "luminance": 0.16601
}

Semantic roles & 50–950 ramp

primary

#5566DC

secondary

#E0DAAC

accent

#D33FE9

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5566DC

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

Preview Lab → · Contrast checker → · Palette generator →