diff --git a/src/utils/MatHelper.php b/src/utils/MatHelper.php
index ef04110..2eb67c4 100644
--- a/src/utils/MatHelper.php
+++ b/src/utils/MatHelper.php
@@ -525,11 +525,14 @@ class MatHelper{
                     $g = $value["g"];
                     $b = $value["b"];
                     $a = $value["a"];
-                    $maxBrightness = 0;
+                    $brightness = 0;
                     foreach([$r,$g,$b] as $value){
-                        $maxBrightness = $value > $maxBrightness ? $value : $maxBrightness;
+                        $brightness = $value > $brightness ? $value : $brightness;
+                    }
+                    $gain = 0;
+                    if($brightness !== 0){
+                        $gain = ((255-$brightness) / $brightness) * ($translucencyIntensity ** (1/2.2));
                     }
-                    $gain = ((255-$maxBrightness) / $maxBrightness) * ($translucencyIntensity ** (1/2.2));
                     $r = round(($r + $r * $gain) * (1-$translucencyIntensity));
                     $g = round(($g + $g * $gain) * (1-$translucencyIntensity));
                     $b = round(($b + $b * $gain) * (1-$translucencyIntensity));