diff --git a/demo/Semi.Avalonia.Demo/Pages/ProgressBarDemo.axaml b/demo/Semi.Avalonia.Demo/Pages/ProgressBarDemo.axaml
index 77d164b..6585870 100644
--- a/demo/Semi.Avalonia.Demo/Pages/ProgressBarDemo.axaml
+++ b/demo/Semi.Avalonia.Demo/Pages/ProgressBarDemo.axaml
@@ -155,7 +155,7 @@
                 Value="60" />
             <ProgressBar
                 Width="200"
-                Classes="Error"
+                Classes="Danger"
                 Maximum="100"
                 Minimum="0"
                 ShowProgressText="True"
diff --git a/src/Semi.Avalonia/Controls/ProgressBar.axaml b/src/Semi.Avalonia/Controls/ProgressBar.axaml
index 8f06a5d..2c68a42 100644
--- a/src/Semi.Avalonia/Controls/ProgressBar.axaml
+++ b/src/Semi.Avalonia/Controls/ProgressBar.axaml
@@ -185,6 +185,10 @@
         <Style Selector="^.Warning">
             <Setter Property="Foreground" Value="{DynamicResource ProgressBarWarningForeground}" />
         </Style>
+        <Style Selector="^.Danger">
+            <Setter Property="Foreground" Value="{DynamicResource ProgressBarDangerForeground}" />
+        </Style>
+        <!-- Error style is obsolete, use Danger instead -->
         <Style Selector="^.Error">
             <Setter Property="Foreground" Value="{DynamicResource ProgressBarErrorForeground}" />
         </Style>
@@ -411,6 +415,10 @@
         <Style Selector="^.Warning">
             <Setter Property="Foreground" Value="{DynamicResource ProgressBarWarningForeground}" />
         </Style>
+        <Style Selector="^.Danger">
+            <Setter Property="Foreground" Value="{DynamicResource ProgressBarDangerForeground}" />
+        </Style>
+        <!-- Error style is obsolete, use Danger instead -->
         <Style Selector="^.Error">
             <Setter Property="Foreground" Value="{DynamicResource ProgressBarErrorForeground}" />
         </Style>
diff --git a/src/Semi.Avalonia/Themes/Dark/ProgressBar.axaml b/src/Semi.Avalonia/Themes/Dark/ProgressBar.axaml
index 6f40655..7b74afd 100644
--- a/src/Semi.Avalonia/Themes/Dark/ProgressBar.axaml
+++ b/src/Semi.Avalonia/Themes/Dark/ProgressBar.axaml
@@ -9,5 +9,7 @@
     <SolidColorBrush x:Key="ProgressBarTertiaryForeground" Color="#888D92" />
     <SolidColorBrush x:Key="ProgressBarSuccessForeground" Color="#5DC264" />
     <SolidColorBrush x:Key="ProgressBarWarningForeground" Color="#FFAE43" />
+    <SolidColorBrush x:Key="ProgressBarDangerForeground" Color="#FC725A" />
+    <!-- Error style is obsolete, use Danger instead -->
     <SolidColorBrush x:Key="ProgressBarErrorForeground" Color="#FC725A" />
 </ResourceDictionary>
\ No newline at end of file
diff --git a/src/Semi.Avalonia/Themes/Light/ProgressBar.axaml b/src/Semi.Avalonia/Themes/Light/ProgressBar.axaml
index 2944dbb..ff03bf3 100644
--- a/src/Semi.Avalonia/Themes/Light/ProgressBar.axaml
+++ b/src/Semi.Avalonia/Themes/Light/ProgressBar.axaml
@@ -9,5 +9,7 @@
     <SolidColorBrush x:Key="ProgressBarTertiaryForeground" Color="#6B7075" />
     <SolidColorBrush x:Key="ProgressBarSuccessForeground" Color="#3BB346" />
     <SolidColorBrush x:Key="ProgressBarWarningForeground" Color="#FC8800" />
+    <SolidColorBrush x:Key="ProgressBarDangerForeground" Color="#F93920" />
+    <!-- Error style is obsolete, use Danger instead -->
     <SolidColorBrush x:Key="ProgressBarErrorForeground" Color="#F93920" />
 </ResourceDictionary>
\ No newline at end of file