Antonym for Utilitarian

Actually, a utilitarian would count the beauty of something as part of its utility.

An "artist" or an "aesthete" would value form.

In philosophy, utilitarianism is a school of thought. There are other schools of thought that are often contrasted with utilitarianism.

Since such a person would be concerned only by appearance and not with function, I would describe them as being superficial

2 a : concerned only with the obvious or apparent : shallow
b : seen on the surface : external
c : presenting only an appearance without substance or significance
_{^{Merriam Webster}}