#5566CF#5566CF

#5566CF is a mid, vivid blue. Relative luminance 0.159; OKLCH L 55.2% C 0.162 H 273.0°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#5566CF
RGB	rgb(85, 102, 207)
HSL	hsl(232, 56%, 57%)
HSV	hsv(232, 59%, 81%)
CMYK	cmyk(58.9%, 50.7%, 0%, 18.8%)
CIE-LAB	lab(46.89, 25.10, -56.49)
CIE-LCH	lch(46.89, 61.81, 293.95°)
OKLab	oklab(55.17% 0.0086 -0.1617)
OKLCH	oklch(55.17% 0.162 273)
XYZ	xyz(19.7565, 15.9375, 61.0545)
Luminance	0.1594 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5566CF #CFBE55

analogous

#55A3CF #5566CF #8155CF

triadic

#5566CF #CF5566 #66CF55

tetradic

#5566CF #CF55A3 #CFBE55 #55CF81

square

#5566CF #CF55A3 #CFBE55 #55CF81

split-complementary

#5566CF #CF8155 #A3CF55

monochromatic

#253384 #3345B4 #5566CF #8591DC #B4BCEA

Accessibility & contrast

On white

5.01

#5566CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#5566CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5566CF

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5566CF	#FFFFFF	#000000	##FFFFFF
##5566CF	1.00	5.01	4.19	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D75D3

Deuteranopia (green-blind)

#116ACD

Tritanopia (blue-blind)

#007E91

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #5566cf;
/* rgb */ color: rgb(85, 102, 207);
/* oklch */ color: oklch(55.2% 0.162 273.0);

Tailwind

colors: {
  custom: {
    50: '#8f91de',
    500: '#5566cf',
    950: '#000000',
  },
}

SCSS

$custom: #5566cf;
$custom-light: #8f91de;
$custom-dark: #000000;

JSON

{
  "hex": "#5566cf",
  "rgb": {
    "r": 85,
    "g": 102,
    "b": 207
  },
  "hsl": {
    "h": 231.639,
    "s": 55.963,
    "l": 57.255
  },
  "oklch": {
    "l": 0.55174,
    "c": 0.16189,
    "h": 273
  },
  "luminance": 0.15939
}

Semantic roles & 50–950 ramp

primary

#5566CF

secondary

#D9D2A7

accent

#CA49DF

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #5566CF

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

Preview Lab → · Contrast checker → · Palette generator →