diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index eaf940ed06..668678e0c8 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -736,6 +736,7 @@ desktop/views/components/settings.vue:
   delete-wallpaper: "壁紙を削除"
   dark-mode: "ダークモード"
   circle-icons: "円形のアイコンを使用"
+  contrasted-acct: "ユーザー名にコントラストを付ける"
   gradient-window-header: "ウィンドウのタイトルバーにグラデーションを使用"
   post-form-on-timeline: "タイムライン上部に投稿フォームを表示する"
   suggest-recent-hashtags: "最近のハッシュタグを投稿フォームに表示する"
@@ -1349,6 +1350,7 @@ mobile/views/pages/settings.vue:
   dark-mode: "ダークモード"
   i-am-under-limited-internet: "私は通信を制限されている"
   circle-icons: "円形のアイコンを使用"
+  contrasted-acct: "ユーザー名にコントラストを付ける"
   timeline: "タイムライン"
   show-reply-target: "リプライ先を表示する"
   show-my-renotes: "自分の行ったRenoteを表示する"
diff --git a/src/client/app/common/views/components/acct.vue b/src/client/app/common/views/components/acct.vue
index 2b5efe609c..bd7833f1a9 100644
--- a/src/client/app/common/views/components/acct.vue
+++ b/src/client/app/common/views/components/acct.vue
@@ -1,7 +1,7 @@
 <template>
 <span class="mk-acct">
 	<span class="name">@{{ user.username }}</span>
-	<span class="host" v-if="user.host || detail">@{{ user.host || host }}</span>
+	<span class="host" :class="{ fade: $store.state.settings.contrastedAcct }" v-if="user.host || detail">@{{ user.host || host }}</span>
 </span>
 </template>
 
@@ -20,6 +20,6 @@ export default Vue.extend({
 
 <style lang="stylus" scoped>
 .mk-acct
-	> .host
+	> .host.fade
 		opacity 0.5
 </style>
diff --git a/src/client/app/desktop/views/components/settings.vue b/src/client/app/desktop/views/components/settings.vue
index 7d6f1d55fb..7cab7ec983 100644
--- a/src/client/app/desktop/views/components/settings.vue
+++ b/src/client/app/desktop/views/components/settings.vue
@@ -44,6 +44,7 @@
 				<button class="ui" @click="deleteWallpaper">%i18n:@delete-wallpaper%</button>
 				<mk-switch v-model="darkmode" text="%i18n:@dark-mode%"/>
 				<mk-switch v-model="$store.state.settings.circleIcons" @change="onChangeCircleIcons" text="%i18n:@circle-icons%"/>
+				<mk-switch v-model="$store.state.settings.contrastedAcct" @change="onContrastedAcct" text="%i18n:@contrasted-acct%"/>
 				<mk-switch v-model="$store.state.settings.gradientWindowHeader" @change="onChangeGradientWindowHeader" text="%i18n:@gradient-window-header%"/>
 				<mk-switch v-model="$store.state.settings.iLikeSushi" @change="onChangeILikeSushi" text="%i18n:common.i-like-sushi%"/>
 			</div>
@@ -376,6 +377,12 @@ export default Vue.extend({
 				value: v
 			});
 		},
+		onChangeContrastedAcct(v) {
+			this.$store.dispatch('settings/set', {
+				key: 'contrastedAcct',
+				value: v
+			});
+		},
 		onChangeILikeSushi(v) {
 			this.$store.dispatch('settings/set', {
 				key: 'iLikeSushi',
diff --git a/src/client/app/mobile/views/pages/settings.vue b/src/client/app/mobile/views/pages/settings.vue
index 4a148dc9d2..29fe067a08 100644
--- a/src/client/app/mobile/views/pages/settings.vue
+++ b/src/client/app/mobile/views/pages/settings.vue
@@ -13,6 +13,7 @@
 				<section>
 					<ui-switch v-model="darkmode">%i18n:@dark-mode%</ui-switch>
 					<ui-switch v-model="$store.state.settings.circleIcons" @change="onChangeCircleIcons">%i18n:@circle-icons%</ui-switch>
+					<ui-switch v-model="$store.state.settings.contrastedAcct" @change="onChangeContrastedAcct">%i18n:@contrasted-acct%</ui-switch>
 					<ui-switch v-model="$store.state.settings.iLikeSushi" @change="onChangeILikeSushi">%i18n:common.i-like-sushi%</ui-switch>
 					<ui-switch v-model="$store.state.settings.disableAnimatedMfm" @change="onChangeDisableAnimatedMfm">%i18n:common.disable-animated-mfm%</ui-switch>
 					<ui-switch v-model="$store.state.settings.games.reversi.showBoardLabels" @change="onChangeReversiBoardLabels">%i18n:common.show-reversi-board-labels%</ui-switch>
@@ -218,6 +219,13 @@ export default Vue.extend({
 			});
 		},
 
+		onChangeContrastedAcct(v) {
+			this.$store.dispatch('settings/set', {
+				key: 'contrastedAcct',
+				value: v
+			});
+		},
+
 		onChangeILikeSushi(v) {
 			this.$store.dispatch('settings/set', {
 				key: 'iLikeSushi',
diff --git a/src/client/app/store.ts b/src/client/app/store.ts
index 08dd9f9920..16ce78ea9f 100644
--- a/src/client/app/store.ts
+++ b/src/client/app/store.ts
@@ -16,6 +16,7 @@ const defaultSettings = {
 	suggestRecentHashtags: true,
 	showClockOnHeader: true,
 	circleIcons: true,
+	contrastedAcct: true,
 	gradientWindowHeader: false,
 	showReplyTarget: true,
 	showMyRenotes: true,