diff --git a/packages/asc-web-common/api/people/index.js b/packages/asc-web-common/api/people/index.js
index f9323a7d448..cb26736c347 100644
--- a/packages/asc-web-common/api/people/index.js
+++ b/packages/asc-web-common/api/people/index.js
@@ -303,3 +303,13 @@ export function getSelectorUserList() {
     url: "/people/filter.json?fields=id,displayName,groups",
   });
 }
+
+export function changeTheme(key) {
+  const data = { Theme: key };
+
+  return request({
+    method: "put",
+    url: `/people/theme.json`,
+    data,
+  });
+}
diff --git a/packages/asc-web-common/constants/index.js b/packages/asc-web-common/constants/index.js
index a3cda8f3a3b..81eb1e82976 100644
--- a/packages/asc-web-common/constants/index.js
+++ b/packages/asc-web-common/constants/index.js
@@ -199,3 +199,16 @@ export const FileStatus = Object.freeze({
 export const TenantStatus = Object.freeze({
   PortalRestore: 4,
 });
+
+/**
+ * Enum for theme keys.
+ * @readonly
+ */
+export const ThemeKeys = Object.freeze({
+  Base: "0",
+  BaseStr: "Base",
+  Dark: "1",
+  DarkStr: "Dark",
+  System: "2",
+  SystemStr: "System",
+});
diff --git a/packages/asc-web-common/store/SettingsStore.js b/packages/asc-web-common/store/SettingsStore.js
index 305bacfec79..c2ad3980a06 100644
--- a/packages/asc-web-common/store/SettingsStore.js
+++ b/packages/asc-web-common/store/SettingsStore.js
@@ -3,7 +3,7 @@ import api from "../api";
 import { LANGUAGE, TenantStatus } from "../constants";
 import { combineUrl } from "../utils";
 import FirebaseHelper from "../utils/firebase";
-import { AppServerConfig } from "../constants";
+import { AppServerConfig, ThemeKeys } from "../constants";
 import { version } from "../package.json";
 import SocketIOHelper from "../utils/socket";
 
@@ -26,9 +26,7 @@ class SettingsStore {
   currentProductId = "";
   culture = "en";
   cultures = [];
-  theme = !!localStorage.getItem("theme")
-    ? themes[localStorage.getItem("theme")]
-    : Base;
+  theme = Base;
   trustedDomains = [];
   trustedDomainsType = 0;
   timezone = "UTC";
@@ -440,19 +438,28 @@ class SettingsStore {
       this.buildVersionInfo.documentServer = "6.4.1";
   };
 
-  changeTheme = () => {
-    const currentTheme =
-      JSON.stringify(this.theme) === JSON.stringify(Base) ? Dark : Base;
-    localStorage.setItem(
-      "theme",
-      JSON.stringify(this.theme) === JSON.stringify(Base) ? "Dark" : "Base"
-    );
-    this.theme = currentTheme;
-  };
+  setTheme = (key) => {
+    let theme = null;
+    switch (key) {
+      case ThemeKeys.Base:
+      case ThemeKeys.BaseStr:
+        theme = ThemeKeys.BaseStr;
+        break;
+      case ThemeKeys.Dark:
+      case ThemeKeys.DarkStr:
+        theme = ThemeKeys.DarkStr;
+        break;
+      case ThemeKeys.System:
+      case ThemeKeys.SystemStr:
+      default:
+        theme =
+          window.matchMedia &&
+          window.matchMedia("(prefers-color-scheme: dark)").matches
+            ? ThemeKeys.DarkStr
+            : ThemeKeys.BaseStr;
+    }
 
-  setTheme = (theme) => {
     this.theme = themes[theme];
-    localStorage.setItem("theme", theme);
   };
 
   setMailDomainSettings = async (data) => {
diff --git a/packages/asc-web-common/store/UserStore.js b/packages/asc-web-common/store/UserStore.js
index b21cbfcf6c9..1a235ac16b4 100644
--- a/packages/asc-web-common/store/UserStore.js
+++ b/packages/asc-web-common/store/UserStore.js
@@ -48,6 +48,18 @@ class UserStore {
     this.setIsLoading(false);
   };
 
+  changeTheme = async (key) => {
+    this.setIsLoading(true);
+
+    const { theme } = await api.people.changeTheme(key);
+
+    this.user.theme = theme;
+
+    this.setIsLoading(false);
+
+    return theme;
+  };
+
   setUserIsUpdate = (isUpdate) => {
     //console.log("setUserIsUpdate");
     this.userIsUpdate = isUpdate;
diff --git a/products/ASC.People/Client/public/locales/en/Profile.json b/products/ASC.People/Client/public/locales/en/Profile.json
index b2861d18f3c..8bf5adae615 100644
--- a/products/ASC.People/Client/public/locales/en/Profile.json
+++ b/products/ASC.People/Client/public/locales/en/Profile.json
@@ -3,11 +3,14 @@
   "ChangesApplied": "Changes are applied",
   "ContactInformation": "Contact Information",
   "CountCodesRemaining": "codes remaining",
+  "DarkTheme": "Dark theme",
   "Disconnect": "Disconnect",
   "EditPhoto": "Edit photo",
   "EditSubscriptionsBtn": "Edit subscriptions",
   "EditUser": "Edit profile",
+  "InterfaceTheme": "Interface theme",
   "InviteAgainLbl": "Invite again",
+  "LightTheme": "Light theme",
   "LoginSettings": "Login settings",
   "MessageEmailActivationInstuctionsSentOnEmail": "The email activation instructions have been sent to the <strong>{{ email }}</strong> email address",
   "PhoneLbl": "Phone",
@@ -17,6 +20,7 @@
   "Subscriptions": "Subscriptions",
   "SubscriptionEmailTipsToggleLbl": "Email notification with tips and tricks",
   "SubscriptionTurnOffToast": "You have been successfully unsubscribed from the the mailing list. <1>Subscribe again</1>",
+  "SystemTheme": "Use system theme",
   "TfaLoginSettings": "Login settings",
   "TwoFactorDescription": "Two-factor authentication via a code-generating app was enabled for all users by the admin."
 }
diff --git a/products/ASC.People/Client/public/locales/ru/Profile.json b/products/ASC.People/Client/public/locales/ru/Profile.json
index 910a01ff188..0683e9992e3 100644
--- a/products/ASC.People/Client/public/locales/ru/Profile.json
+++ b/products/ASC.People/Client/public/locales/ru/Profile.json
@@ -3,11 +3,14 @@
   "ChangesApplied": "Изменения успешно применены",
   "ContactInformation": "Контактные данные",
   "CountCodesRemaining": "оставшиеся коды",
+  "DarkTheme": "Тёмная тема",
   "Disconnect": "Отключить",
   "EditPhoto": "Изменить фотографию",
   "EditSubscriptionsBtn": "Изменить подписки",
   "EditUser": "Редактировать",
+  "InterfaceTheme": "Тема интерфейса",
   "InviteAgainLbl": "Активировать адрес email ещё раз",
+  "LightTheme": "Светлая тема",
   "LoginSettings": "Вход через социальные сети",
   "MessageEmailActivationInstuctionsSentOnEmail": "Инструкция по активации почты пользователя была отправлена по адресу <strong>{{ email }}</strong>",
   "PhoneLbl": "Основной телефон",
@@ -15,6 +18,7 @@
   "ProviderSuccessfullyDisconnected": "Провайдер успешно отключен",
   "ShowBackupCodes": "Показать резервные коды",
   "Subscriptions": "Подписки",
+  "SystemTheme": "Использовать тему системы",
   "TfaLoginSettings": "Настройки входа",
   "TwoFactorDescription": "Двухфакторная аутентификация с помощью приложения для генерации кодов включена администратором для всех пользователей."
 }
diff --git a/products/ASC.People/Client/src/pages/Profile/Section/Body/index.js b/products/ASC.People/Client/src/pages/Profile/Section/Body/index.js
index 1b837cdaaca..5a8f4496676 100644
--- a/products/ASC.People/Client/src/pages/Profile/Section/Body/index.js
+++ b/products/ASC.People/Client/src/pages/Profile/Section/Body/index.js
@@ -26,8 +26,16 @@ import {
   getUserRole,
 } from "../../../../helpers/people-helpers";
 import config from "../../../../../package.json";
-import { AppServerConfig, providersData } from "@appserver/common/constants";
-import { unlinkOAuth, linkOAuth } from "@appserver/common/api/people";
+import {
+  AppServerConfig,
+  providersData,
+  ThemeKeys,
+} from "@appserver/common/constants";
+import {
+  unlinkOAuth,
+  linkOAuth,
+  changeTheme,
+} from "@appserver/common/api/people";
 import { getAuthProviders } from "@appserver/common/api/settings";
 import { Trans, useTranslation } from "react-i18next";
 import {
@@ -37,6 +45,7 @@ import {
 
 import Loaders from "@appserver/common/components/Loaders";
 import withLoader from "../../../../HOCs/withLoader";
+import RadioButtonGroup from "@appserver/components/radio-button-group";
 
 const ProfileWrapper = styled.div`
   display: flex;
@@ -344,6 +353,18 @@ class SectionBodyContent extends React.PureComponent {
     this.props.changeEmailSubscription(checked);
   };
 
+  onChangeTheme = async (e) => {
+    const { setIsLoading, changeTheme, setTheme } = this.props;
+
+    const value = e.currentTarget.value;
+
+    setIsLoading(true);
+
+    await changeTheme(value);
+
+    setIsLoading(false);
+  };
+
   render() {
     const { resetAppDialogVisible, backupCodesDialogVisible, tfa } = this.state;
     const {
@@ -359,6 +380,8 @@ class SectionBodyContent extends React.PureComponent {
       personal,
       tipsSubscription,
       theme,
+      setTheme,
+      selectedTheme,
     } = this.props;
     const contacts = profile.contacts && getUserContacts(profile.contacts);
     const role = getUserRole(profile);
@@ -483,8 +506,27 @@ class SectionBodyContent extends React.PureComponent {
           </ToggleWrapper>
         )}
 
-        {profile.notes && (
+        {isSelf && (
           <ToggleWrapper>
+            <ToggleContent label={t("InterfaceTheme")} isOpen={true}>
+              <RadioButtonGroup
+                orientation={"vertical"}
+                name={"interface-theme"}
+                options={[
+                  { value: ThemeKeys.SystemStr, label: t("SystemTheme") },
+                  { value: ThemeKeys.BaseStr, label: t("LightTheme") },
+                  { value: ThemeKeys.DarkStr, label: t("DarkTheme") },
+                ]}
+                onClick={this.onChangeTheme}
+                selected={selectedTheme}
+                spacing={"10px"}
+              />
+            </ToggleContent>
+          </ToggleWrapper>
+        )}
+
+        {profile.notes && (
+          <ToggleWrapper isContacts={true}>
             <ToggleContent label={t("Translations:Comments")} isOpen={true}>
               <Text className="profile-comments" as="span">
                 {profile.notes}
@@ -535,9 +577,21 @@ class SectionBodyContent extends React.PureComponent {
 export default withRouter(
   inject(({ auth, peopleStore }) => {
     const { isAdmin, userStore, settingsStore, tfaStore } = auth;
-    const { user: viewer } = userStore;
-    const { isTabletView, getOAuthToken, getLoginLink, theme } = settingsStore;
-    const { targetUserStore, avatarEditorStore, usersStore } = peopleStore;
+    const { user: viewer, changeTheme } = userStore;
+
+    const {
+      isTabletView,
+      getOAuthToken,
+      getLoginLink,
+      theme,
+      setTheme,
+    } = settingsStore;
+    const {
+      targetUserStore,
+      avatarEditorStore,
+      usersStore,
+      loadingStore,
+    } = peopleStore;
     const {
       targetUser: profile,
       isMe: isSelf,
@@ -579,6 +633,10 @@ export default withRouter(
       changeEmailSubscription,
       tipsSubscription,
       theme,
+      setTheme,
+      changeTheme,
+      selectedTheme: viewer.theme,
+      setIsLoading: loadingStore.setIsLoading,
     };
   })(
     observer(
diff --git a/public/locales/en/Common.json b/public/locales/en/Common.json
index 9cd8870a4ba..f7701531db8 100644
--- a/public/locales/en/Common.json
+++ b/public/locales/en/Common.json
@@ -52,7 +52,6 @@
   "Culture_uk": "Ukrainian (Ukraine)",
   "Culture_vi": "Vietnamese (Vietnam)",
   "Culture_zh-CN": "Chinese (Simplified, PRC)",
-  "DarkMode": "Dark mode",
   "Duplicate": "Create a copy",
   "Delete": "Delete",
   "Department": "Department",
diff --git a/public/locales/ru/Common.json b/public/locales/ru/Common.json
index bf79805831c..7f765619f43 100644
--- a/public/locales/ru/Common.json
+++ b/public/locales/ru/Common.json
@@ -52,7 +52,6 @@
   "Culture_uk": "Украинский (Украина)",
   "Culture_vi": "Вьетнамский (Вьетнам)",
   "Culture_zh-CN": "Китайский (упрощенный, КНР)",
-  "DarkMode": "Тёмная тема",
   "Duplicate": "Создать копию",
   "Delete": "Удалить",
   "Department": "Отдел",
diff --git a/web/ASC.Web.Client/src/Shell.jsx b/web/ASC.Web.Client/src/Shell.jsx
index c2510d75288..2e138afc60f 100644
--- a/web/ASC.Web.Client/src/Shell.jsx
+++ b/web/ASC.Web.Client/src/Shell.jsx
@@ -175,21 +175,6 @@ const InvalidRoute = (props) => (
 
 const RedirectToHome = () => <Redirect to={PROXY_HOMEPAGE_URL} />;
 
-const checkTheme = () => {
-  const theme = localStorage.getItem("theme");
-
-  if (theme) return theme;
-
-  if (
-    window.matchMedia &&
-    window.matchMedia("(prefers-color-scheme: dark)").matches
-  ) {
-    return "Dark";
-  }
-
-  return "Base";
-};
-
 const Shell = ({ items = [], page = "home", ...rest }) => {
   const {
     isLoaded,
@@ -206,6 +191,7 @@ const Shell = ({ items = [], page = "home", ...rest }) => {
     setMaintenanceExist,
     roomsMode,
     setSnackbarExist,
+    userTheme,
   } = rest;
 
   useEffect(() => {
@@ -431,8 +417,8 @@ const Shell = ({ items = [], page = "home", ...rest }) => {
   }, [page]);
 
   useEffect(() => {
-    setTheme(checkTheme());
-  }, []);
+    if (userTheme) setTheme(userTheme);
+  }, [userTheme]);
 
   const pathname = window.location.pathname.toLowerCase();
   const isEditor = pathname.indexOf("doceditor") !== -1;
@@ -567,6 +553,7 @@ const Shell = ({ items = [], page = "home", ...rest }) => {
 
 const ShellWrapper = inject(({ auth, backup }) => {
   const { init, isLoaded, settingsStore, setProductVersion, language } = auth;
+
   const {
     personal,
     roomsMode,
@@ -605,11 +592,13 @@ const ShellWrapper = inject(({ auth, backup }) => {
     setTheme,
     roomsMode,
     setSnackbarExist,
+    userTheme: auth?.userStore?.user?.theme,
   };
 })(observer(Shell));
 
 const ThemeProviderWrapper = inject(({ auth }) => {
   const { settingsStore } = auth;
+
   return { theme: settingsStore.theme };
 })(observer(ThemeProvider));