The internet abounds with techniques for teaching elementary schoolers the difference between warm and cool colors—an often-invisible, somewhat flexible line down the middle of the color wheel ...

“But within the neutral genre…it kind of ebbs and flows between cool and warm, and right now we’re in a warm time…Now we’re going for the creams and these kinds of clay and putty colors.

But with a little know-how, picking colors that work best in interior design truly can make a difference, from setting the scene for visual appeal to making warm and cool colors work in a ...