Maybe use somthing diffrent in the picture! If you exemple taking a potrait of a human you can have the same colurs in the face, like makeup or clothes as you have in the bakground. So it is looking a little bit like a camoflage or like you have became one with the background. Otherwise you can have a big contrast in the picture! like if the background is in clod tones and the thing or person that you are photografing have worm colurs. You can always play with lights and fairy lights!
