public static function HexToRGBA($hex, $alpha) { $res = \backbone\Color::HexToRGB($hex); if ($alpha > 1) { $alpha = $alpha / 100; } elseif ($alpha < 0) { $alpha = 0; } $res[0]['alpha'] = $alpha; $res[1] = "rgba(" . substr($res[1], 3, -1) . ", {$alpha})"; return $res; }