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You can manage how GitHub looks to you by setting a theme preference that either follows your system settings or always uses a light or dark mode.

GitHub を使用時期と使用方法を選択して柔軟性を高めるために、テーマ設定をして GitHub の外観を変更できます。 You can choose from themes that are light or dark, or you can configure GitHub to follow your system settings.

You may want to use a dark theme to reduce power consumption on certain devices, to reduce eye strain in low-light conditions, or because you prefer how the theme looks.

If you have low vision, you may benefit from a high contrast theme, with greater contrast between foreground and background elements. If you have colorblindness, you may benefit from our light and dark colorblind themes.

  1. 任意のページの右上で、プロフィール画像をクリックし、続いてSettings(設定)をクリックしてください。

    ユーザバーの [Settings(設定)] アイコン

  2. In the left sidebar, click Appearance.

  3. Under "Theme mode", select the drop-down menu, then click a theme preference.

    Drop-down menu under "Theme mode" for selection of theme preference

  4. 使いたいテーマをクリックしてください。

    • If you chose a single theme, click a theme.

      Radio buttons for the choice of a single theme

    • If you chose to follow your system settings, click a day theme and a night theme.

      Buttons for the choice of a theme to sync with the system setting

    • If you would like to choose a theme which is currently in public beta, you will first need to enable it with feature preview. For more information, see "Exploring early access releases with feature preview."

Note: You can also change your theme settings with the command palette. For more information, see "GitHub Command Palette".