diff --git a/app/scanner/mainwindow.cpp b/app/scanner/mainwindow.cpp
index bf00538c..e7610a5f 100644
--- a/app/scanner/mainwindow.cpp
+++ b/app/scanner/mainwindow.cpp
@@ -72,7 +72,7 @@ MainWindow::MainWindow(QWidget *parent)
     this->setWindowTitle(tr("HuaGoScan"));
 #endif
     this->setAutoFillBackground(true);
-    this->setPalette(QPalette(QColor(240, 240, 240)));
+    this->setPalette(QPalette(QColor(230, 230, 230)));
 
     m_config.load();