I am trying to get the background color of the location where I tapped on the screen.

If I understood correctly the location I can get by using the dragGesture. But I have trouble getting the background color of that location.

Any sugestions?

I would try using a combination of these two techniques that Paul described:

How to detect the location of a tap inside a view - a free SwiftUI by Example tutorial

How to convert a SwiftUI view to an image - a free SwiftUI by Example tutorial

So the idea would be to 1) detect the location of the tap, and then 2) render the screen to an image.

Then, 3) use this gist to get the color of the pixel at the location in the image:

UIView extension which allows to get colour of any point inside

Do note that I haven't actually tried this yet, so it may not work. Worth a shot, though.

Depending on your exact use case, you should adjust this approach accordingly.