Color psychology is the study of how colors impact human behavior. Different colors have different meanings and psychological effects that vary across cultures. Blue represents calmness and trust, green represents health and growth, and purple represents luxury and power. Warm colors like red, pink, and orange convey passion and energy while cool colors like blue and green feel calming. Color can influence the perception of space - light colors make a room feel more spacious while dark colors make it feel smaller and more intimate. Warm colors feel heavier and advance while cool colors feel lighter and recede. Movement in a space can be created through color, texture, lines, and repetition.