What pro tips do designers use to test paint color accurately?

Designers test paint in the exact finish and sheen intended for walls because gloss levels affect color perception. They apply large, evenly lit samples on neutral backgrounds and observe colors multiple times a day in natural and artificial light. Designers also use large swatches by flooring and trim to judge undertones correctly. Documenting samples with photos throughout the day helps identify consistent color winners, avoiding costly repainting and ensuring confidence in final choices.