diff --git a/src/Avalonia.Controls.ColorPicker/Themes/Fluent/ColorPreviewer.xaml b/src/Avalonia.Controls.ColorPicker/Themes/Fluent/ColorPreviewer.xaml
index 3a88d25ef1..e05fa5a907 100644
--- a/src/Avalonia.Controls.ColorPicker/Themes/Fluent/ColorPreviewer.xaml
+++ b/src/Avalonia.Controls.ColorPicker/Themes/Fluent/ColorPreviewer.xaml
@@ -64,6 +64,7 @@
             <Border Grid.Column="1"
                     HorizontalAlignment="Stretch"
                     VerticalAlignment="Stretch"
+                    Background="Transparent"
                     BoxShadow="0 0 10 2 #BF000000"
                     CornerRadius="{TemplateBinding CornerRadius}"
                     Margin="10">
diff --git a/src/Avalonia.Controls.ColorPicker/Themes/Simple/ColorPreviewer.xaml b/src/Avalonia.Controls.ColorPicker/Themes/Simple/ColorPreviewer.xaml
index 0e51a0519a..a39dd91f52 100644
--- a/src/Avalonia.Controls.ColorPicker/Themes/Simple/ColorPreviewer.xaml
+++ b/src/Avalonia.Controls.ColorPicker/Themes/Simple/ColorPreviewer.xaml
@@ -64,6 +64,7 @@
             <Border Grid.Column="1"
                     HorizontalAlignment="Stretch"
                     VerticalAlignment="Stretch"
+                    Background="Transparent"
                     BoxShadow="0 0 10 2 #BF000000"
                     CornerRadius="{TemplateBinding CornerRadius}"
                     Margin="10">