How can I set an image tint in SwiftUI?

On new swiftUI for set tint use:

Image("ImageName")
  .foregroundColor(.red)

Depending on the source image you may also need an additional rendering mode modifier:

Image("ImageName")
  .renderingMode(.template)
  .colorMultiply(.red)
// or
Image("ImageName")
  .colorMultiply(.blue)

And you can read this topic.