1. Understand purpose of each room: Every room has a different function,so it's colors should match the mood you want to create.
A. Living rooms warm neural colors.

B.Bedrooms should have soft blue ,sage green,lavendar,or pastel shades.
C.Kitchen should have white ,light grey, mint green and warm yellow.

2. Consider natural lighting : Bright rooms can handle dark colour and vica versa.

3.Match with furniture and furnishings: Your wall colors should compliment your furniture, curtains,blinds, flooring,and decor instead of competing with them
Final Thoughts:The perfect colour combination is that keeps balance between style, comfort and functionality . Think about your home's lighting , furniture and lifestyle before making a decesion.