The Chicago Cubs use a bright royal blue and red with white. The blue is the main color of the caps and the circular logo, and the red 'C' sits inside it. Home jerseys are white with thin blue pinstripes. The red-white-and-blue scheme has been part of the club's identity for a very long time.
These are commonly used reference values; they can vary by source, material or screen. Brand names and colors belong to their owners; this page only lists color codes for information.