diff --git a/src/preferencesdialog.cpp b/src/preferencesdialog.cpp
new file mode 100644
index 0000000..a14f4c2
--- /dev/null
+++ b/src/preferencesdialog.cpp
@@ -0,0 +1,62 @@
+#include "preferencesdialog.h"
+
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QComboBox>
+#include <QPushButton>
+#include <QGroupBox>
+
+PreferencesDialog::PreferencesDialog(QWidget *parent)
+    : QDialog(parent)
+{
+    setWindowTitle("Preferences");
+    setModal(true);
+    setMinimumWidth(400);
+
+    QVBoxLayout *mainLayout = new QVBoxLayout(this);
+
+    QGroupBox *imageGroup = new QGroupBox("Image Viewer", this);
+    QVBoxLayout *groupLayout = new QVBoxLayout(imageGroup);
+
+    QHBoxLayout *bgColorLayout = new QHBoxLayout;
+    QLabel *bgColorLabel = new QLabel("Background Color:");
+    m_backgroundColorCombo = new QComboBox;
+    m_backgroundColorCombo->addItem("Black", "black");
+    m_backgroundColorCombo->addItem("White", "white");
+    m_backgroundColorCombo->addItem("Dark Gray", "darkgray");
+
+    bgColorLayout->addWidget(bgColorLabel);
+    bgColorLayout->addWidget(m_backgroundColorCombo);
+    bgColorLayout->addStretch();
+
+    groupLayout->addLayout(bgColorLayout);
+    mainLayout->addWidget(imageGroup);
+
+    mainLayout->addStretch();
+
+    QHBoxLayout *buttonLayout = new QHBoxLayout;
+    QPushButton *okButton = new QPushButton("OK");
+    QPushButton *cancelButton = new QPushButton("Cancel");
+
+    buttonLayout->addStretch();
+    buttonLayout->addWidget(okButton);
+    buttonLayout->addWidget(cancelButton);
+
+    mainLayout->addLayout(buttonLayout);
+
+    connect(okButton, &QPushButton::clicked, this, &QDialog::accept);
+    connect(cancelButton, &QPushButton::clicked, this, &QDialog::reject);
+}
+
+QString PreferencesDialog::getBackgroundColor() const
+{
+    return m_backgroundColorCombo->currentData().toString();
+}
+
+void PreferencesDialog::setBackgroundColor(const QString &color)
+{
+    int index = m_backgroundColorCombo->findData(color);
+    if (index >= 0)
+        m_backgroundColorCombo->setCurrentIndex(index);
+}
diff --git a/src/preferencesdialog.h b/src/preferencesdialog.h
new file mode 100644
index 0000000..4c3910d
--- /dev/null
+++ b/src/preferencesdialog.h
@@ -0,0 +1,19 @@
+#pragma once
+
+#include <QDialog>
+
+class QComboBox;
+
+class PreferencesDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit PreferencesDialog(QWidget *parent = nullptr);
+
+    QString getBackgroundColor() const;
+    void setBackgroundColor(const QString &color);
+
+private:
+    QComboBox *m_backgroundColorCombo;
+};