diff --git a/src/Avalonia.Themes.Fluent/Accents/FluentControlResources.xaml b/src/Avalonia.Themes.Fluent/Accents/FluentControlResources.xaml
index 80778a50db..f7d04ccd9b 100644
--- a/src/Avalonia.Themes.Fluent/Accents/FluentControlResources.xaml
+++ b/src/Avalonia.Themes.Fluent/Accents/FluentControlResources.xaml
@@ -1651,7 +1651,7 @@
 
       <!-- BaseResources for WindowDrawnDecorations.xaml -->
       <SolidColorBrush x:Key="CaptionButtonForeground" Color="White" />
-      <SolidColorBrush x:Key="CaptionButtonBackground" Color="#ffe5e5e5" />
+      <SolidColorBrush x:Key="CaptionButtonBackground" Color="#ff1d170f" />
       <SolidColorBrush x:Key="CaptionButtonBorderBrush" Color="#ffcacaca" />
       <StaticResource x:Key="TitleBarBackgroundBrush" ResourceKey="SystemControlBackgroundAltHighBrush" />
     </ResourceDictionary>
diff --git a/src/Avalonia.Themes.Simple/Accents/Base.xaml b/src/Avalonia.Themes.Simple/Accents/Base.xaml
index c81ba824d8..8b10f2735e 100644
--- a/src/Avalonia.Themes.Simple/Accents/Base.xaml
+++ b/src/Avalonia.Themes.Simple/Accents/Base.xaml
@@ -90,7 +90,7 @@
 
       <!-- BaseResources for WindowDrawnDecorations.xaml -->
       <SolidColorBrush x:Key="CaptionButtonForeground" Color="White" />
-      <SolidColorBrush x:Key="CaptionButtonBackground" Color="#ffe5e5e5" />
+      <SolidColorBrush x:Key="CaptionButtonBackground" Color="#ff1d170f" />
       <SolidColorBrush x:Key="CaptionButtonBorderBrush" Color="#ffcacaca" />
       <StaticResource x:Key="TitleBarBackgroundBrush" ResourceKey="ThemeBackgroundBrush" />
     </ResourceDictionary>