You can choose the color with the help of four basic methods for interior.
I will explain you all methods in details.
In this interior tutorial I will show you how to use one color in your room.
Idea 1. Choose one color for the room
Idea 2. Choose 2 Colors for the room that are similar in the color wheel
Idea 3. Colors that are opposite to each other and similar at the same time
Idea 4. Colors that are opposite, contrasting colors