diff --git a/src/Semi.Avalonia/Controls/SelectableTextBlock.axaml b/src/Semi.Avalonia/Controls/SelectableTextBlock.axaml
index 5af71ab..f37905a 100644
--- a/src/Semi.Avalonia/Controls/SelectableTextBlock.axaml
+++ b/src/Semi.Avalonia/Controls/SelectableTextBlock.axaml
@@ -17,6 +17,7 @@
         <Setter Property="SelectableTextBlock.FontSize" Value="{DynamicResource TextBlockFontSize}" />
         <Setter Property="SelectableTextBlock.Cursor" Value="Ibeam" />
         <Setter Property="SelectableTextBlock.SelectionBrush" Value="{DynamicResource TextBlockSelectionBackground}" />
+        <Setter Property="SelectableTextBlock.SelectionForegroundBrush" Value="{DynamicResource TextBlockSelectionForeground}" />
         <Style Selector="^.Secondary">
             <Setter Property="Foreground" Value="{DynamicResource TextBlockSecondaryForeground}" />
         </Style>
diff --git a/src/Semi.Avalonia/Themes/Dark/TextBlock.axaml b/src/Semi.Avalonia/Themes/Dark/TextBlock.axaml
index a51facb..ca0e53a 100644
--- a/src/Semi.Avalonia/Themes/Dark/TextBlock.axaml
+++ b/src/Semi.Avalonia/Themes/Dark/TextBlock.axaml
@@ -7,10 +7,11 @@
     <SolidColorBrush x:Key="TextBlockWarningForeground" Color="#FFAE43" />
     <SolidColorBrush x:Key="TextBlockDangerForeground" Color="#FC725A" />
     <SolidColorBrush x:Key="TextBlockDisabledForeground" Opacity="0.35" Color="#F9F9F9" />
-    <SolidColorBrush x:Key="TextBlockCodeForeground" Opacity="0.68" Color="#F9F9F9" />
-    <SolidColorBrush x:Key="TextBlockMarkBackground" Color="#053170" />
-    <SolidColorBrush x:Key="TextBlockCodeBackground" Opacity="0.1" Color="#E6E8EA" />
-    <SolidColorBrush x:Key="TextBlockCodeBorderBrush" Opacity="0.2" Color="#E6E8EA" />
+    <SolidColorBrush x:Key="TextBlockMarkBackground" Opacity="0.2" Color="#54A9FF" />
+    <SolidColorBrush x:Key="TextBlockCodeForeground" Opacity="0.6" Color="#F9F9F9" />
+    <SolidColorBrush x:Key="TextBlockCodeBackground" Opacity="0.16" Color="White" />
+    <SolidColorBrush x:Key="TextBlockCodeBorderBrush" Opacity="0.08" Color="White" />
 
-    <SolidColorBrush x:Key="TextBlockSelectionBackground" Opacity="0.2" Color="#54A9FF" />
+    <SolidColorBrush x:Key="TextBlockSelectionBackground" Opacity="0.8" Color="#0041C5" />
+    <SolidColorBrush x:Key="TextBlockSelectionForeground" Color="White" />
 </ResourceDictionary>
\ No newline at end of file
diff --git a/src/Semi.Avalonia/Themes/Light/TextBlock.axaml b/src/Semi.Avalonia/Themes/Light/TextBlock.axaml
index c9329eb..0cda42b 100644
--- a/src/Semi.Avalonia/Themes/Light/TextBlock.axaml
+++ b/src/Semi.Avalonia/Themes/Light/TextBlock.axaml
@@ -7,10 +7,11 @@
     <SolidColorBrush x:Key="TextBlockWarningForeground" Color="#FC8800" />
     <SolidColorBrush x:Key="TextBlockDangerForeground" Color="#F93920" />
     <SolidColorBrush x:Key="TextBlockDisabledForeground" Opacity="0.35" Color="#1C1F23" />
-    <SolidColorBrush x:Key="TextBlockCodeForeground" Opacity="0.68" Color="#1C1F23" />
     <SolidColorBrush x:Key="TextBlockMarkBackground" Color="#EAF5FF" />
-    <SolidColorBrush x:Key="TextBlockCodeBackground" Opacity="0.1" Color="#2E3238" />
-    <SolidColorBrush x:Key="TextBlockCodeBorderBrush" Opacity="0.2" Color="#2E3238" />
+    <SolidColorBrush x:Key="TextBlockCodeForeground" Opacity="0.62" Color="#1C1F23" />
+    <SolidColorBrush x:Key="TextBlockCodeBackground" Opacity="0.09" Color="#2E3238" />
+    <SolidColorBrush x:Key="TextBlockCodeBorderBrush" Opacity="0.08" Color="#1C1F23" />
 
-    <SolidColorBrush x:Key="TextBlockSelectionBackground" Opacity="0.2" Color="#0077FA" />
+    <SolidColorBrush x:Key="TextBlockSelectionBackground" Opacity="0.8" Color="#0041C5" />
+    <SolidColorBrush x:Key="TextBlockSelectionForeground" Color="White" />
 </ResourceDictionary>
\ No newline at end of file