#5566E6#5566E6

#5566E6 is a mid, vivid blue. Relative luminance 0.171; OKLCH L 56.8% C 0.193 H 272.9°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#5566E6
RGB	rgb(85, 102, 230)
HSL	hsl(233, 74%, 62%)
HSV	hsv(233, 63%, 90%)
CMYK	cmyk(63%, 55.7%, 0%, 9.8%)
CIE-LAB	lab(48.44, 32.79, -67.04)
CIE-LCH	lch(48.44, 74.63, 296.06°)
OKLab	oklab(56.83% 0.0099 -0.1927)
OKLCH	oklch(56.83% 0.193 272.9)
XYZ	xyz(22.7759, 17.1453, 76.9567)
Luminance	0.1715 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5566E6 #E6D555

analogous

#55AEE6 #5566E6 #8D55E6

triadic

#5566E6 #E65566 #66E655

tetradic

#5566E6 #E655AE #E6D555 #55E68D

square

#5566E6 #E655AE #E6D555 #55E68D

split-complementary

#5566E6 #E68D55 #AEE655

monochromatic

#1929A8 #2137DD #5566E6 #8A96EE #C0C6F6

Accessibility & contrast

On white

4.74

#5566E6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#5566E6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5566E6

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5566E6	#FFFFFF	#000000	##FFFFFF
##5566E6	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AEA

Deuteranopia (green-blind)

#006DE3

Tritanopia (blue-blind)

#00859C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #5566e6;
/* rgb */ color: rgb(85, 102, 230);
/* oklch */ color: oklch(56.8% 0.193 272.9);

Tailwind

colors: {
  custom: {
    50: '#9391ef',
    500: '#5566e6',
    950: '#000000',
  },
}

SCSS

$custom: #5566e6;
$custom-light: #9391ef;
$custom-dark: #000000;

JSON

{
  "hex": "#5566e6",
  "rgb": {
    "r": 85,
    "g": 102,
    "b": 230
  },
  "hsl": {
    "h": 232.966,
    "s": 74.359,
    "l": 61.765
  },
  "oklch": {
    "l": 0.56831,
    "c": 0.19296,
    "h": 272.9
  },
  "luminance": 0.17147
}

Semantic roles & 50–950 ramp

primary

#5566E6

secondary

#E6E0B1

accent

#BF0FD6

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5566E6

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

Preview Lab → · Contrast checker → · Palette generator →