#5566C8#5566C8

#5566C8 is a mid, vivid blue. Relative luminance 0.156; OKLCH L 54.7% C 0.152 H 273.0°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#5566C8
RGB	rgb(85, 102, 200)
HSL	hsl(231, 51%, 56%)
HSV	hsv(231, 58%, 78%)
CMYK	cmyk(57.5%, 49%, 0%, 21.6%)
CIE-LAB	lab(46.45, 22.76, -53.18)
CIE-LCH	lch(46.45, 57.85, 293.17°)
OKLab	oklab(54.7% 0.0079 -0.1519)
OKLCH	oklch(54.7% 0.152 273)
XYZ	xyz(18.9196, 15.6028, 56.6470)
Luminance	0.1560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5566C8 #C8B755

analogous

#55A0C8 #5566C8 #7D55C8

triadic

#5566C8 #C85566 #66C855

tetradic

#5566C8 #C855A0 #C8B755 #55C87D

square

#5566C8 #C855A0 #C8B755 #55C87D

split-complementary

#5566C8 #C87D55 #A0C855

monochromatic

#28347B #3748A9 #5566C8 #8390D7 #B1B9E6

Accessibility & contrast

On white

5.10

#5566C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#5566C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5566C8

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5566C8	#FFFFFF	#000000	##FFFFFF
##5566C8	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3573CC

Deuteranopia (green-blind)

#2269C6

Tritanopia (blue-blind)

#027C8D

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #5566c8;
/* rgb */ color: rgb(85, 102, 200);
/* oklch */ color: oklch(54.7% 0.152 273.0);

Tailwind

colors: {
  custom: {
    50: '#8e91d9',
    500: '#5566c8',
    950: '#000000',
  },
}

SCSS

$custom: #5566c8;
$custom-light: #8e91d9;
$custom-dark: #000000;

JSON

{
  "hex": "#5566c8",
  "rgb": {
    "r": 85,
    "g": 102,
    "b": 200
  },
  "hsl": {
    "h": 231.13,
    "s": 51.111,
    "l": 55.882
  },
  "oklch": {
    "l": 0.54696,
    "c": 0.15214,
    "h": 273
  },
  "luminance": 0.15604
}

Semantic roles & 50–950 ramp

primary

#5566C8

secondary

#D4CDA5

accent

#C64DDB

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #5566C8

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

Preview Lab → · Contrast checker → · Palette generator →