diff --git a/www/lib/CoreLibs/Convert/Color/Color.php b/www/lib/CoreLibs/Convert/Color/Color.php
index 17f3accc..744491fc 100644
--- a/www/lib/CoreLibs/Convert/Color/Color.php
+++ b/www/lib/CoreLibs/Convert/Color/Color.php
@@ -562,7 +562,7 @@ class Color
 	 * convert rgb to OkLch
 	 * via rgb -> linear rgb -> xyz D65 -> OkLab -> OkLch
 	 *
-	 * @param  RGB $rbh
+	 * @param  RGB $rgb
 	 * @return LCH
 	 */
 	public static function rgbToOkLch(RGB $rgb): LCH
diff --git a/www/lib/CoreLibs/Convert/Color/Coordinates/Lab.php b/www/lib/CoreLibs/Convert/Color/Coordinates/Lab.php
index 60635c0c..d4e0b47e 100644
--- a/www/lib/CoreLibs/Convert/Color/Coordinates/Lab.php
+++ b/www/lib/CoreLibs/Convert/Color/Coordinates/Lab.php
@@ -45,7 +45,7 @@ class Lab implements Interface\CoordinatesInterface
 	 * Color Coordinate: Lab
 	 * for oklab or cie
 	 *
-	 * @param string|array{0:float,1:float,2:float} $rgb
+	 * @param string|array{0:float,1:float,2:float} $colors
 	 * @param string $colorspace [default='']
 	 * @param array<string,string> $options [default=[]]
 	 * @throws \InvalidArgumentException only array colors allowed
@@ -62,7 +62,7 @@ class Lab implements Interface\CoordinatesInterface
 	 * set from array
 	 * where 0: Lightness, 1: a, 2: b
 	 *
-	 * @param array{0:float,1:float,2:float} $rgb
+	 * @param array{0:float,1:float,2:float} $colors
 	 * @param string $colorspace [default='']
 	 * @param array<string,string> $options [default=[]]
 	 * @return self
diff --git a/www/lib/CoreLibs/Convert/Color/Coordinates/XYZ.php b/www/lib/CoreLibs/Convert/Color/Coordinates/XYZ.php
index 2e30b98d..0909badb 100644
--- a/www/lib/CoreLibs/Convert/Color/Coordinates/XYZ.php
+++ b/www/lib/CoreLibs/Convert/Color/Coordinates/XYZ.php
@@ -82,7 +82,7 @@ class XYZ implements Interface\CoordinatesInterface
 	/**
 	 * parse options
 	 *
-	 * @param  array<string,bool> $options
+	 * @param  array<string,string> $options
 	 * @return self
 	 */
 	private function parseOptions(array $options): self
diff --git a/www/lib/CoreLibs/Convert/Colors.php b/www/lib/CoreLibs/Convert/Colors.php
index f4b6f2eb..52f3f9d8 100644
--- a/www/lib/CoreLibs/Convert/Colors.php
+++ b/www/lib/CoreLibs/Convert/Colors.php
@@ -62,6 +62,7 @@ class Colors
 		$rgbArray = [];
 		// rewrite to previous r/g/b key output
 		foreach ((new Coordinates\RGB($hex_string))->returnAsArray() as $p => $el) {
+			$k = '';
 			switch ($p) {
 				case 0:
 					$k = 'r';
diff --git a/www/lib/CoreLibs/Convert/Math.php b/www/lib/CoreLibs/Convert/Math.php
index fedc60ed..8b8043db 100644
--- a/www/lib/CoreLibs/Convert/Math.php
+++ b/www/lib/CoreLibs/Convert/Math.php
@@ -137,10 +137,10 @@ class Math
 	 *
 	 * It returns an array which is the product of the two number matrices passed as parameters.
 	 *
-	 * @param  array<array<int|float>> $a m x n matrice
-	 * @param  array<array<int|float>> $b n x p matrice
+	 * @param  array<float|int|array<int|float>> $a m x n matrice
+	 * @param  array<float|int|array<int|float>> $b n x p matrice
 	 *
-	 * @return array<array<int|float>>    m x p product
+	 * @return array<float|int|array<int|float>>    m x p product
 	 */
 	public static function multiplyMatrices(array $a, array $b): array
 	{