diff --git a/src/Intervention/Image/Gd/Color.php b/src/Intervention/Image/Gd/Color.php
index 51ba1606..5238831f 100644
--- a/src/Intervention/Image/Gd/Color.php
+++ b/src/Intervention/Image/Gd/Color.php
@@ -177,7 +177,7 @@ class Color extends AbstractColor
      */
     public function getRgba()
     {
-        return sprintf('rgba(%d, %d, %d, %.2f)', $this->r, $this->g, $this->b, round(1 - $this->a / 127, 2));
+        return sprintf('rgba(%d, %d, %d, %.2F)', $this->r, $this->g, $this->b, round(1 - $this->a / 127, 2));
     }
 
     /**
diff --git a/src/Intervention/Image/Gd/Commands/OpacityCommand.php b/src/Intervention/Image/Gd/Commands/OpacityCommand.php
index 201fcabc..081e68a4 100644
--- a/src/Intervention/Image/Gd/Commands/OpacityCommand.php
+++ b/src/Intervention/Image/Gd/Commands/OpacityCommand.php
@@ -18,7 +18,7 @@ class OpacityCommand extends \Intervention\Image\Commands\AbstractCommand
         $size = $image->getSize();
 
         // build temp alpha mask
-        $mask_color = sprintf('rgba(0, 0, 0, %.1f)', $transparency / 100);
+        $mask_color = sprintf('rgba(0, 0, 0, %.1F)', $transparency / 100);
         $mask = $image->getDriver()->newImage($size->width, $size->height, $mask_color);
 
         // mask image
diff --git a/src/Intervention/Image/Imagick/Color.php b/src/Intervention/Image/Imagick/Color.php
index a914feea..3940993e 100644
--- a/src/Intervention/Image/Imagick/Color.php
+++ b/src/Intervention/Image/Imagick/Color.php
@@ -163,7 +163,7 @@ class Color extends \Intervention\Image\AbstractColor
      */
     public function getRgba()
     {
-        return sprintf('rgba(%d, %d, %d, %.2f)',
+        return sprintf('rgba(%d, %d, %d, %.2F)',
             $this->getRedValue(),
             $this->getGreenValue(),
             $this->getBlueValue(),
@@ -248,7 +248,7 @@ class Color extends \Intervention\Image\AbstractColor
         $a = is_null($a) ? 1 : $a;
 
         return $this->pixel = new \ImagickPixel(
-            sprintf('rgba(%d, %d, %d, %.2f)', $r, $g, $b, $a)
+            sprintf('rgba(%d, %d, %d, %.2F)', $r, $g, $b, $a)
         );
     }