$color = Color::fromHex('FFFFFF');
echo $color->getRgb()['b']; // 255

/** @var Color $darkerColor */
$darkerColor = $color->darken(50); // 50% darker

echo $darkerColor; // implements `__toString()`

if ($darkerColor->isDark()) {
    // do something with a dark color
}

// Create a color palette based on #663399
$color     = Color::fromCssColor('RebeccaPurple');
$generator = new PaletteGenerator($color);
$palette   = $generator->triad(40);

foreach ($palette as $color) {
    printf(
    '<div style="background-color:%s;color:%s;text-align:center;">%s</div>',
        CssGenerator::hex($color),
        CssGenerator::hex($color->getMatchingTextColor()),
        CssGenerator::rgb($color)
    );
}