#5566DD#5566DD

#5566DD is a mid, vivid blue. Relative luminance 0.167; OKLCH L 56.2% C 0.181 H 273.0°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#5566DD
RGB	rgb(85, 102, 221)
HSL	hsl(233, 67%, 60%)
HSV	hsv(233, 62%, 87%)
CMYK	cmyk(61.5%, 53.8%, 0%, 13.3%)
CIE-LAB	lab(47.82, 29.78, -62.97)
CIE-LCH	lch(47.82, 69.65, 295.31°)
OKLab	oklab(56.17% 0.0095 -0.1807)
OKLCH	oklch(56.17% 0.181 273)
XYZ	xyz(21.5445, 16.6527, 70.4715)
Luminance	0.1665 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5566DD #DDCC55

analogous

#55AADD #5566DD #8855DD

triadic

#5566DD #DD5566 #66DD55

tetradic

#5566DD #DD55AA #DDCC55 #55DD88

square

#5566DD #DD55AA #DDCC55 #55DD88

split-complementary

#5566DD #DD8855 #AADD55

monochromatic

#1F2E99 #293DCC #5566DD #8894E7 #BBC2F1

Accessibility & contrast

On white

4.85

#5566DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#5566DD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5566DD

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5566DD	#FFFFFF	#000000	##FFFFFF
##5566DD	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1178E1

Deuteranopia (green-blind)

#006CDB

Tritanopia (blue-blind)

#008298

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #5566dd;
/* rgb */ color: rgb(85, 102, 221);
/* oklch */ color: oklch(56.2% 0.181 273.0);

Tailwind

colors: {
  custom: {
    50: '#9191e8',
    500: '#5566dd',
    950: '#000000',
  },
}

SCSS

$custom: #5566dd;
$custom-light: #9191e8;
$custom-dark: #000000;

JSON

{
  "hex": "#5566dd",
  "rgb": {
    "r": 85,
    "g": 102,
    "b": 221
  },
  "hsl": {
    "h": 232.5,
    "s": 66.667,
    "l": 60
  },
  "oklch": {
    "l": 0.56167,
    "c": 0.18097,
    "h": 273
  },
  "luminance": 0.16654
}

Semantic roles & 50–950 ramp

primary

#5566DD

secondary

#E1DBAD

accent

#D43EEA

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5566DD

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

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