#5566EE#5566EE

#5566EE is a mid, highly saturated blue. Relative luminance 0.176; OKLCH L 57.4% C 0.203 H 272.8°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#5566EE
RGB	rgb(85, 102, 238)
HSL	hsl(233, 82%, 63%)
HSV	hsv(233, 64%, 93%)
CMYK	cmyk(64.3%, 57.1%, 0%, 6.7%)
CIE-LAB	lab(49.01, 35.47, -70.61)
CIE-LCH	lch(49.01, 79.02, 296.67°)
OKLab	oklab(57.44% 0.0101 -0.2032)
OKLCH	oklch(57.44% 0.203 272.8)
XYZ	xyz(23.9252, 17.6050, 83.0096)
Luminance	0.1761 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5566EE #EEDD55

analogous

#55B3EE #5566EE #9055EE

triadic

#5566EE #EE5566 #66EE55

tetradic

#5566EE #EE55B3 #EEDD55 #55EE90

square

#5566EE #EE55B3 #EEDD55 #55EE90

split-complementary

#5566EE #EE9055 #B3EE55

monochromatic

#1224B6 #1D34E8 #5566EE #8D98F4 #C4CAF9

Accessibility & contrast

On white

4.64

#5566EE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#5566EE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5566EE

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5566EE	#FFFFFF	#000000	##FFFFFF
##5566EE	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007BF3

Deuteranopia (green-blind)

#006EEB

Tritanopia (blue-blind)

#0087A0

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #5566ee;
/* rgb */ color: rgb(85, 102, 238);
/* oklch */ color: oklch(57.4% 0.203 272.8);

Tailwind

colors: {
  custom: {
    50: '#9491f4',
    500: '#5566ee',
    950: '#000000',
  },
}

SCSS

$custom: #5566ee;
$custom-light: #9491f4;
$custom-dark: #000000;

JSON

{
  "hex": "#5566ee",
  "rgb": {
    "r": 85,
    "g": 102,
    "b": 238
  },
  "hsl": {
    "h": 233.333,
    "s": 81.818,
    "l": 63.333
  },
  "oklch": {
    "l": 0.57436,
    "c": 0.20346,
    "h": 272.8
  },
  "luminance": 0.17607
}

Semantic roles & 50–950 ramp

primary

#5566EE

secondary

#EBE5B4

accent

#C607DE

background

#F9F8FF

surface

#F2F0FE

border

#CCCBD6

text

#0F0C17

muted

#7E7D85

Preview Lab

Preview with #5566EE

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

Preview Lab → · Contrast checker → · Palette generator →