Why do all fast-food chains use red and banks use blue? It’s not a coincidence, it’s Color Psychology. In this simple English guide, you will learn how colors influence the human brain and how to use them to increase your sales. Discover the 60-30-10 golden rule, understand the difference between warm and cool colors, and explore real cases like BCP, Nubank, and Netflix. Complete the challenges and play the interactive widgets to become a color master!