#5566CA#5566CA

#5566CA is a mid, vivid blue. Relative luminance 0.157; OKLCH L 54.8% C 0.155 H 273.0°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#5566CA
RGB	rgb(85, 102, 202)
HSL	hsl(231, 52%, 56%)
HSV	hsv(231, 58%, 79%)
CMYK	cmyk(57.9%, 49.5%, 0%, 20.8%)
CIE-LAB	lab(46.57, 23.43, -54.13)
CIE-LCH	lch(46.57, 58.99, 293.40°)
OKLab	oklab(54.83% 0.0081 -0.1547)
OKLCH	oklch(54.83% 0.155 273)
XYZ	xyz(19.1549, 15.6969, 57.8861)
Luminance	0.1570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5566CA #CAB955

analogous

#55A1CA #5566CA #7F55CA

triadic

#5566CA #CA5566 #66CA55

tetradic

#5566CA #CA55A1 #CAB955 #55CA7F

square

#5566CA #CA55A1 #CAB955 #55CA7F

split-complementary

#5566CA #CA7F55 #A1CA55

monochromatic

#27347D #3647AC #5566CA #8490D9 #B2BAE7

Accessibility & contrast

On white

5.07

#5566CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#5566CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5566CA

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5566CA	#FFFFFF	#000000	##FFFFFF
##5566CA	1.00	5.07	4.14	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3374CE

Deuteranopia (green-blind)

#1E6AC8

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #5566ca;
/* rgb */ color: rgb(85, 102, 202);
/* oklch */ color: oklch(54.8% 0.155 273.0);

Tailwind

colors: {
  custom: {
    50: '#8e91db',
    500: '#5566ca',
    950: '#000000',
  },
}

SCSS

$custom: #5566ca;
$custom-light: #8e91db;
$custom-dark: #000000;

JSON

{
  "hex": "#5566ca",
  "rgb": {
    "r": 85,
    "g": 102,
    "b": 202
  },
  "hsl": {
    "h": 231.282,
    "s": 52.466,
    "l": 56.275
  },
  "oklch": {
    "l": 0.54831,
    "c": 0.15494,
    "h": 273
  },
  "luminance": 0.15698
}

Semantic roles & 50–950 ramp

primary

#5566CA

secondary

#D5CEA5

accent

#C74CDC

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #5566CA

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

Preview Lab → · Contrast checker → · Palette generator →