The phrase "contrasting elements" refers to things that are very different from each other. It could be used to describe two opposite or opposing factors or characteristics. Full definition
A fast - paced score challenge level that contains two contrasting elements in its design. (blog.us.playstation.com)
Since then his sculptures have been recognised for their ability to achieve harmonious balance through contrasting elements positioned and combined with lyrical precision. (frithstreetgallery.com)
Adding unique detailed and designed accessories coordinated and bring the two contrasting elements together. (sophieandtrey.com)