diff --git a/src/utils/MatHelper.php b/src/utils/MatHelper.php
index f966094..7dda7d9 100644
--- a/src/utils/MatHelper.php
+++ b/src/utils/MatHelper.php
@@ -37,7 +37,7 @@ class MatHelper{
     /**
      * 获得 十六进制颜色 同色调 的 最大亮度
      */
-    static function colorMaxBrightness($hexColor){
+    static function colorMaxBrightness($hexColor,$scale){
         $r = (hexdec(substr($hexColor, 1, 2)));
         $g = (hexdec(substr($hexColor, 3, 2)));
         $b = (hexdec(substr($hexColor, 5, 2)));
@@ -47,10 +47,10 @@ class MatHelper{
             $MaxBrightnessPass = $value > $MaxBrightnessPass ? $value : $MaxBrightnessPass;
         }
 
-        $scale = 255 / $MaxBrightnessPass;
-        $r =dechex(round($r  * $scale));
-        $g =dechex(round($g  * $scale));
-        $b =dechex(round($b  * $scale));
+        $gain = (255 - $MaxBrightnessPass) / 255 * $scale;
+        $r =dechex(round($r + 255 * $gain));
+        $g =dechex(round($g + 255 * $gain));
+        $b =dechex(round($b + 255 * $gain));
 
         return "#{$r}{$g}{$b}";
     }
@@ -430,7 +430,7 @@ class MatHelper{
             $matOriginal->matParams->translucencyColor
         ));
         $material->setBaseColor( self::hex2floatColor(
-            self::colorMaxBrightness($matOriginal->matParams->translucencyColor),
+            self::colorMaxBrightness($matOriginal->matParams->translucencyColor, $translucencyIntensity),
             1 - $translucencyIntensity
         ));
         // $material->setSpecular(