The researchers selected more than 600 students and asked them to take the test on a computer with a red and blue screen background  As a result, people who used computers with red background scored higher in accuracy tests such as memory and proofreading, while those who used computers with blue background showed better imagination and creativity  At the 2004 Summer Olympics, athletes wearing red costumes won 60% in boxing, taekwondo, wrestling and other competitions
The blue sky and the ocean give people a sense of openness and tranquility
Red and blue easily affect people's cognition and behavior.