#5566E4#5566E4

#5566E4 is a mid, vivid blue. Relative luminance 0.170; OKLCH L 56.7% C 0.190 H 273.0°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#5566E4
RGB	rgb(85, 102, 228)
HSL	hsl(233, 73%, 61%)
HSV	hsv(233, 63%, 89%)
CMYK	cmyk(62.7%, 55.3%, 0%, 10.6%)
CIE-LAB	lab(48.30, 32.12, -66.14)
CIE-LCH	lch(48.30, 73.53, 295.90°)
OKLab	oklab(56.68% 0.0098 -0.1901)
OKLCH	oklch(56.68% 0.19 273)
XYZ	xyz(22.4966, 17.0336, 75.4860)
Luminance	0.1704 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5566E4 #E4D355

analogous

#55AEE4 #5566E4 #8C55E4

triadic

#5566E4 #E45566 #66E455

tetradic

#5566E4 #E455AE #E4D355 #55E48C

square

#5566E4 #E455AE #E4D355 #55E48C

split-complementary

#5566E4 #E48C55 #AEE455

monochromatic

#1A2BA4 #2338D9 #5566E4 #8A96EC #BFC5F5

Accessibility & contrast

On white

4.77

#5566E4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#5566E4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5566E4

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5566E4	#FFFFFF	#000000	##FFFFFF
##5566E4	1.00	4.77	4.41	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079E8

Deuteranopia (green-blind)

#006DE1

Tritanopia (blue-blind)

#00849B

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #5566e4;
/* rgb */ color: rgb(85, 102, 228);
/* oklch */ color: oklch(56.7% 0.190 273.0);

Tailwind

colors: {
  custom: {
    50: '#9391ed',
    500: '#5566e4',
    950: '#000000',
  },
}

SCSS

$custom: #5566e4;
$custom-light: #9391ed;
$custom-dark: #000000;

JSON

{
  "hex": "#5566e4",
  "rgb": {
    "r": 85,
    "g": 102,
    "b": 228
  },
  "hsl": {
    "h": 232.867,
    "s": 72.589,
    "l": 61.373
  },
  "oklch": {
    "l": 0.56682,
    "c": 0.19032,
    "h": 273
  },
  "luminance": 0.17035
}

Semantic roles & 50–950 ramp

primary

#5566E4

secondary

#E5DFB0

accent

#BD11D5

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5566E4

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

Preview Lab → · Contrast checker → · Palette generator →