Choosing the right color palette is one of the most important decisions in interior design. Start by understanding color theory and how different colors interact with each other. Consider the natural light in your space - north-facing rooms need warmer tones, while south-facing spaces can handle cooler colors. Think about your personal style and what emotions you want to evoke. Neutral colors provide a timeless foundation, while accent colors add personality and visual interest. The 60-30-10 rule is a classic approach: 60% dominant color, 30% secondary color, and 10% accent color. Test paint samples on your walls and observe them at different times of day. Consider existing elements like flooring and existing furniture when selecting your palette.