#5566F0#5566F0

#5566F0 is a mid, highly saturated blue. Relative luminance 0.177; OKLCH L 57.6% C 0.206 H 272.8°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#5566F0
RGB	rgb(85, 102, 240)
HSL	hsl(233, 84%, 64%)
HSV	hsv(233, 65%, 94%)
CMYK	cmyk(64.6%, 57.5%, 0%, 5.9%)
CIE-LAB	lab(49.16, 36.14, -71.50)
CIE-LCH	lch(49.16, 80.11, 296.81°)
OKLab	oklab(57.59% 0.0101 -0.2058)
OKLCH	oklch(57.59% 0.206 272.8)
XYZ	xyz(24.2206, 17.7232, 84.5657)
Luminance	0.1772 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5566F0 #F0DF55

analogous

#55B3F0 #5566F0 #9155F0

triadic

#5566F0 #F05566 #66F055

tetradic

#5566F0 #F055B3 #F0DF55 #55F091

square

#5566F0 #F055B3 #F0DF55 #55F091

split-complementary

#5566F0 #F09155 #B3F055

monochromatic

#1023BA #1D33EB #5566F0 #8D99F5 #C5CBFA

Accessibility & contrast

On white

4.62

#5566F0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#5566F0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5566F0

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5566F0	#FFFFFF	#000000	##FFFFFF
##5566F0	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007CF5

Deuteranopia (green-blind)

#006EED

Tritanopia (blue-blind)

#0088A1

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5566f0;
/* rgb */ color: rgb(85, 102, 240);
/* oklch */ color: oklch(57.6% 0.206 272.8);

Tailwind

colors: {
  custom: {
    50: '#9591f6',
    500: '#5566f0',
    950: '#000000',
  },
}

SCSS

$custom: #5566f0;
$custom-light: #9591f6;
$custom-dark: #000000;

JSON

{
  "hex": "#5566f0",
  "rgb": {
    "r": 85,
    "g": 102,
    "b": 240
  },
  "hsl": {
    "h": 233.419,
    "s": 83.784,
    "l": 63.725
  },
  "oklch": {
    "l": 0.5759,
    "c": 0.20606,
    "h": 272.8
  },
  "luminance": 0.17725
}

Semantic roles & 50–950 ramp

primary

#5566F0

secondary

#ECE6B5

accent

#C805E0

background

#F9F8FF

surface

#F2F0FF

border

#CCCBD7

text

#0F0C17

muted

#7E7D85

Preview Lab

Preview with #5566F0

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

Preview Lab → · Contrast checker → · Palette generator →