diff --git a/ModernWpf/ThemeResources/Dark.xaml b/ModernWpf/ThemeResources/Dark.xaml
index 501906d9..f5b5c352 100644
--- a/ModernWpf/ThemeResources/Dark.xaml
+++ b/ModernWpf/ThemeResources/Dark.xaml
@@ -1468,7 +1468,7 @@
     <m:StaticResource x:Key="SplitButtonBackgroundDisabled" ResourceKey="ControlFillColorDisabledBrush" />
     <m:StaticResource x:Key="SplitButtonBackgroundChecked" ResourceKey="AccentFillColorDefaultBrush" />
     <m:StaticResource x:Key="SplitButtonBackgroundCheckedPointerOver" ResourceKey="AccentFillColorSecondaryBrush" />
-    <m:StaticResource x:Key="SplitButtonBackgroundCheckedPressed" ResourceKey="AccentFillColorTertiaryBrush" />
+    <m:StaticResource x:Key="SplitButtonBackgroundCheckedPressed" ResourceKey="SystemAccentColorLight1Brush" />
     <m:StaticResource x:Key="SplitButtonBackgroundCheckedDisabled" ResourceKey="AccentFillColorDisabledBrush" />
     <m:StaticResource x:Key="SplitButtonForeground" ResourceKey="TextFillColorPrimaryBrush" />
     <m:StaticResource x:Key="SplitButtonForegroundPointerOver" ResourceKey="TextFillColorPrimaryBrush" />
diff --git a/ModernWpf/ThemeResources/HighContrast.xaml b/ModernWpf/ThemeResources/HighContrast.xaml
index 276a61e0..8a9b9fe4 100644
--- a/ModernWpf/ThemeResources/HighContrast.xaml
+++ b/ModernWpf/ThemeResources/HighContrast.xaml
@@ -1441,7 +1441,7 @@
     <m:StaticResource x:Key="SplitButtonBackgroundDisabled" ResourceKey="SystemControlBackgroundBaseLowBrush" />
     <m:StaticResource x:Key="SplitButtonBackgroundChecked" ResourceKey="SystemControlHighlightAccentBrush" />
     <m:StaticResource x:Key="SplitButtonBackgroundCheckedPointerOver" ResourceKey="SystemColorButtonTextColorBrush" />
-    <m:StaticResource x:Key="SplitButtonBackgroundCheckedPressed" ResourceKey="SystemColorButtonFaceColorBrush" />
+    <m:StaticResource x:Key="SplitButtonBackgroundCheckedPressed" ResourceKey="SystemColorButtonTextColorBrush" />
     <m:StaticResource x:Key="SplitButtonBackgroundCheckedDisabled" ResourceKey="SystemControlBackgroundBaseLowBrush" />
     <m:StaticResource x:Key="SplitButtonForeground" ResourceKey="SystemColorButtonTextColorBrush" />
     <m:StaticResource x:Key="SplitButtonForegroundPointerOver" ResourceKey="SystemColorHighlightColorBrush" />
diff --git a/ModernWpf/ThemeResources/Light.xaml b/ModernWpf/ThemeResources/Light.xaml
index f12dee8a..9937b6b7 100644
--- a/ModernWpf/ThemeResources/Light.xaml
+++ b/ModernWpf/ThemeResources/Light.xaml
@@ -1470,7 +1470,7 @@
     <m:StaticResource x:Key="SplitButtonBackgroundDisabled" ResourceKey="ControlFillColorDisabledBrush" />
     <m:StaticResource x:Key="SplitButtonBackgroundChecked" ResourceKey="AccentFillColorDefaultBrush" />
     <m:StaticResource x:Key="SplitButtonBackgroundCheckedPointerOver" ResourceKey="AccentFillColorSecondaryBrush" />
-    <m:StaticResource x:Key="SplitButtonBackgroundCheckedPressed" ResourceKey="AccentFillColorTertiaryBrush" />
+    <m:StaticResource x:Key="SplitButtonBackgroundCheckedPressed" ResourceKey="SystemAccentColorDark1Brush" />
     <m:StaticResource x:Key="SplitButtonBackgroundCheckedDisabled" ResourceKey="AccentFillColorDisabledBrush" />
     <m:StaticResource x:Key="SplitButtonForeground" ResourceKey="TextFillColorPrimaryBrush" />
     <m:StaticResource x:Key="SplitButtonForegroundPointerOver" ResourceKey="TextFillColorPrimaryBrush" />