Why are the colors of elements in the app different in Xcode and on iphone?

Question

Apple Xcode

Hello. Faced the following problem. I make images for the application in Sketch. Sketch and Xcode don't render colors the same, and on a real iphone they become much lighter. Could the problem be that my macmini is not connected to an Apple monitor, but to a ViewSonic?

Answer 1

the usual story is a mismatch of colors on the screen and the result.
this is usually solved by calibration, if the monitor allows.