#5566E1#5566E1

#5566E1 is a mid, vivid blue. Relative luminance 0.169; OKLCH L 56.5% C 0.186 H 273.0°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#5566E1
RGB	rgb(85, 102, 225)
HSL	hsl(233, 70%, 61%)
HSV	hsv(233, 62%, 88%)
CMYK	cmyk(62.2%, 54.7%, 0%, 11.8%)
CIE-LAB	lab(48.09, 31.12, -64.79)
CIE-LCH	lch(48.09, 71.87, 295.66°)
OKLab	oklab(56.46% 0.0097 -0.1861)
OKLCH	oklch(56.46% 0.186 273)
XYZ	xyz(22.0838, 16.8684, 73.3117)
Luminance	0.1687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5566E1 #E1D055

analogous

#55ACE1 #5566E1 #8A55E1

triadic

#5566E1 #E15566 #66E155

tetradic

#5566E1 #E155AC #E1D055 #55E18A

square

#5566E1 #E155AC #E1D055 #55E18A

split-complementary

#5566E1 #E18A55 #ACE155

monochromatic

#1C2C9F #253AD3 #5566E1 #8995EA #BDC4F3

Accessibility & contrast

On white

4.80

#5566E1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#5566E1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5566E1

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5566E1	#FFFFFF	#000000	##FFFFFF
##5566E1	1.00	4.80	4.37	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079E5

Deuteranopia (green-blind)

#006CDE

Tritanopia (blue-blind)

#00839A

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #5566e1;
/* rgb */ color: rgb(85, 102, 225);
/* oklch */ color: oklch(56.5% 0.186 273.0);

Tailwind

colors: {
  custom: {
    50: '#9291eb',
    500: '#5566e1',
    950: '#000000',
  },
}

SCSS

$custom: #5566e1;
$custom-light: #9291eb;
$custom-dark: #000000;

JSON

{
  "hex": "#5566e1",
  "rgb": {
    "r": 85,
    "g": 102,
    "b": 225
  },
  "hsl": {
    "h": 232.714,
    "s": 70,
    "l": 60.784
  },
  "oklch": {
    "l": 0.5646,
    "c": 0.18632,
    "h": 273
  },
  "luminance": 0.1687
}

Semantic roles & 50–950 ramp

primary

#5566E1

secondary

#E3DDAE

accent

#BB14D2

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5566E1

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

Preview Lab → · Contrast checker → · Palette generator →