Final answer:
When choosing a color scheme for a room, consider the psychological effects of colors, color harmony based on color theory, and the room's function and lighting.
Step-by-step explanation:
The three things that should be considered when choosing a color scheme for a room are: the psychological effect of colors, color harmony, and the room's function and lighting.
Different colors can evoke different emotions and moods; red might symbolize passion or anger, while white can suggest purity. When choosing colors, it's essential to understand how they interact based on color theory, which involves primary, secondary, and tertiary colors
For color harmony, one can use a color wheel to find complementary colors or a monochromatic scheme for unity.
It's also important to consider the function of the room. For instance, a bedroom might benefit from calming colors like blues or greens, whereas a study room might utilize vibrant colors to stimulate the mind.
Finally, lighting should be taken into account as it can significantly affect the appearance of colors. Natural light can reveal the true color, while artificial light can alter how a color is perceived.