diff --git a/_config.yml b/_config.yml
index 52308d7..7fcf6f6 100644
--- a/_config.yml
+++ b/_config.yml
@@ -13,6 +13,9 @@ wiki:
   title: "Minetest JP Wiki"
   # 画像フォルダのパス
   images_dir: "images"
+  # テーマカラー
+  # モバイル版Chromeのタブ色に使用される
+  theme_color: "#f2f2f2"
 
 ### レイアウト関連 ###
 
diff --git a/_layouts/default.html b/_layouts/default.html
index 9d710a8..660028e 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -27,6 +27,7 @@ body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:non
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
     <meta name="google-site-verification" content="SzmyhmFa1r6eafWLqLct1hOKj-Awxn0JH8r0U4PUCyc">
+    <meta name="theme-color" content="{{ site.wiki.theme_color }}">
 
     <title>{{ page.title }} - {{ site.wiki.title }}</title>
     <link rel="shortcut icon" href="{{ icon_url }}">