I feel really stupid for asking this, but here goes:

Is there a button or setting somewhere to make Xcode use dark mode for its environment in the Mojave Beta?

Searching for this renders a lot of questions about dark mode in High Sierra, or how to make your programs adjust to dark mode, but what I want is for Xcode itself to use dark mode, which just doesn't happen on my 2015 MBP with Mojave Beta. I guess Xcode, being an Apple product and all, should detect that OS X is in Dark Mode and adjust accordingly?

  • Try running this in Terminal: defaults write http://com.apple.dt.Xcode NSWindowDarkChocolate -bool true
    – Nimesh Neema
    Commented Aug 10, 2018 at 10:40
  • What versions of Mojave and Xcode beta are you using?
    – fsb
    Commented Aug 10, 2018 at 12:36
  • Mojave 10.14 Beta (18A353d) and Xcode Version 9.4.1 (9F2000). Commented Aug 10, 2018 at 12:53
  • You need to use Xcode 10 beta, in order to use dark mode. Xcode 9 does not support dark mode.
    – user128998
    Commented Aug 10, 2018 at 19:53
  • That was it! Xcode 10 beta works like charm. Thanks for helping me out! Commented Aug 12, 2018 at 7:49

1 Answer 1


For Dark Mode to work, I needed Xcode 10 beta. Thanks to user128998 for helping me out!

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