diff --git a/Shared/Navigation/ContentView.swift b/Shared/Navigation/ContentView.swift
index 16cb4b1..b404072 100644
--- a/Shared/Navigation/ContentView.swift
+++ b/Shared/Navigation/ContentView.swift
@@ -1,23 +1,25 @@
 import SwiftUI
 
 struct ContentView: View {
     @ObservedObject var postStore: PostStore
+    @ObservedObject var preferences: PreferencesModel
 
     var body: some View {
         NavigationView {
             SidebarView()
 
             PostList(selectedCollection: allPostsCollection)
 
             Text("Select a post, or create a new draft.")
                 .foregroundColor(.secondary)
         }
         .environmentObject(postStore)
+        .environmentObject(preferences)
     }
 }
 
 struct ContentView_Previews: PreviewProvider {
     static var previews: some View {
-        ContentView(postStore: testPostStore)
+        ContentView(postStore: testPostStore, preferences: PreferencesModel())
     }
 }
diff --git a/Shared/Preferences/PreferencesView.swift b/Shared/Preferences/PreferencesView.swift
index 290dd46..e45ff17 100644
--- a/Shared/Preferences/PreferencesView.swift
+++ b/Shared/Preferences/PreferencesView.swift
@@ -1,28 +1,28 @@
 import SwiftUI
 
 struct PreferencesView: View {
-    @State private var appearance: Int = 0
+    @ObservedObject var preferences: PreferencesModel
 
     var body: some View {
         #if os(iOS)
-        Picker(selection: $appearance, label: Text("Appearance")) {
+        Picker(selection: $preferences.appearance, label: Text("Appearance")) {
             Text("System").tag(0)
             Text("Light Mode").tag(1)
             Text("Dark Mode").tag(2)
         }
         .pickerStyle(SegmentedPickerStyle())
         #elseif os(macOS)
-        Picker(selection: $appearance, label: Text("Appearance")) {
+        Picker(selection: $preferences.appearance, label: Text("Appearance")) {
             Text("System").tag(0)
             Text("Light Mode").tag(1)
             Text("Dark Mode").tag(2)
         }
         #endif
     }
 }
 
 struct SwiftUIView_Previews: PreviewProvider {
     static var previews: some View {
-        PreferencesView()
+        PreferencesView(preferences: PreferencesModel())
     }
 }
diff --git a/Shared/WriteFreely_MultiPlatformApp.swift b/Shared/WriteFreely_MultiPlatformApp.swift
index d96c106..1b426da 100644
--- a/Shared/WriteFreely_MultiPlatformApp.swift
+++ b/Shared/WriteFreely_MultiPlatformApp.swift
@@ -1,24 +1,27 @@
 import SwiftUI
 
 @main
 struct WriteFreely_MultiPlatformApp: App {
+    @StateObject private var preferences = PreferencesModel()
+
     #if DEBUG
     @StateObject private var store = testPostStore
     #else
     @StateObject private var store = PostStore()
     #endif
 
     var body: some Scene {
         WindowGroup {
-            ContentView(postStore: store)
+            ContentView(postStore: store, preferences: preferences)
+                .environment(\.colorScheme, preferences.preferredColorScheme)
         }
 
         #if os(macOS)
         Settings {
-            SettingsView()
+            SettingsView(preferences: preferences)
                 .frame(minWidth: 300, maxWidth: 300, minHeight: 200, maxHeight: 200)
                 .padding()
         }
         #endif
     }
 }
diff --git a/iOS/Settings/SettingsView.swift b/iOS/Settings/SettingsView.swift
index daed735..50ad760 100644
--- a/iOS/Settings/SettingsView.swift
+++ b/iOS/Settings/SettingsView.swift
@@ -1,25 +1,28 @@
 import SwiftUI
 
 struct SettingsView: View {
+    @EnvironmentObject var preferences: PreferencesModel
+
     @Binding var isPresented: Bool
 
     var body: some View {
         VStack {
             SettingsHeaderView(isPresented: $isPresented)
             Form {
                 Section(header: Text("Login Details")) {
                     AccountView()
                 }
                 Section(header: Text("Appearance")) {
-                    PreferencesView()
+                    PreferencesView(preferences: preferences)
                 }
             }
         }
+        .preferredColorScheme(preferences.preferredColorScheme)
     }
 }
 
 struct SettingsView_Previews: PreviewProvider {
     static var previews: some View {
         SettingsView(isPresented: .constant(true))
     }
 }
diff --git a/macOS/Settings/SettingsView.swift b/macOS/Settings/SettingsView.swift
index 40af22c..b4b9393 100644
--- a/macOS/Settings/SettingsView.swift
+++ b/macOS/Settings/SettingsView.swift
@@ -1,41 +1,43 @@
 import SwiftUI
 
 struct SettingsView: View {
+    @ObservedObject var preferences: PreferencesModel
+
     @State var selectedView = 0
 
     var body: some View {
         TabView(selection: $selectedView) {
             Form {
                 Section(header: Text("Login Details")) {
                     AccountView()
                 }
             }
             .tabItem {
                 Image(systemName: "person.crop.circle")
                 Text("Account")
             }
             .tag(0)
             VStack {
-                PreferencesView()
+                PreferencesView(preferences: preferences)
                 Spacer()
             }
             .tabItem {
                 Image(systemName: "gear")
                 Text("Preferences")
             }
             .tag(1)
         }
     }
 }
 
 struct SettingsView_AccountTabPreviews: PreviewProvider {
     static var previews: some View {
-        SettingsView(selectedView: 0)
+        SettingsView(preferences: PreferencesModel(), selectedView: 0)
     }
 }
 
 struct SettingsView_PreferencesTabPreviews: PreviewProvider {
     static var previews: some View {
-        SettingsView(selectedView: 1)
+        SettingsView(preferences: PreferencesModel(), selectedView: 1)
     }
 }