#5566BF#5566BF

#5566BF is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.1% C 0.139 H 272.8°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#5566BF
RGB	rgb(85, 102, 191)
HSL	hsl(230, 45%, 54%)
HSV	hsv(230, 55%, 75%)
CMYK	cmyk(55.5%, 46.6%, 0%, 25.1%)
CIE-LAB	lab(45.90, 19.78, -48.87)
CIE-LCH	lch(45.90, 52.73, 292.04°)
OKLab	oklab(54.1% 0.0068 -0.1393)
OKLCH	oklch(54.1% 0.139 272.8)
XYZ	xyz(17.8986, 15.1943, 51.2697)
Luminance	0.1520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5566BF #BFAE55

analogous

#559BBF #5566BF #7955BF

triadic

#5566BF #BF5566 #66BF55

tetradic

#5566BF #BF559B #BFAE55 #55BF79

square

#5566BF #BF559B #BFAE55 #55BF79

split-complementary

#5566BF #BF7955 #9BBF55

monochromatic

#2A3570 #3B4A9C #5566BF #818ED0 #AEB6E0

Accessibility & contrast

On white

5.20

#5566BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#5566BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5566BF

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5566BF	#FFFFFF	#000000	##FFFFFF
##5566BF	1.00	5.20	4.04	5.20
#FFFFFF	5.20	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D71C2

Deuteranopia (green-blind)

#2F68BD

Tritanopia (blue-blind)

#1B7A89

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #5566bf;
/* rgb */ color: rgb(85, 102, 191);
/* oklch */ color: oklch(54.1% 0.139 272.8);

Tailwind

colors: {
  custom: {
    50: '#8d91d3',
    500: '#5566bf',
    950: '#000000',
  },
}

SCSS

$custom: #5566bf;
$custom-light: #8d91d3;
$custom-dark: #000000;

JSON

{
  "hex": "#5566bf",
  "rgb": {
    "r": 85,
    "g": 102,
    "b": 191
  },
  "hsl": {
    "h": 230.377,
    "s": 45.299,
    "l": 54.118
  },
  "oklch": {
    "l": 0.54102,
    "c": 0.13943,
    "h": 272.8
  },
  "luminance": 0.15196
}

Semantic roles & 50–950 ramp

primary

#5566BF

secondary

#CEC7A1

accent

#C053D5

background

#F9F8FD

surface

#F1F0FA

border

#CBCBD3

text

#0D0C14

muted

#7E7D83

Preview Lab

Preview with #5566BF

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

Preview Lab → · Contrast checker → · Palette generator →