The short answer is every emotion has an association with color. Just as colors blend across the color spectrum, our emotions follow a very similar gradient. From happy to sad, from white to black. We grow up learning this, and very much part of our subconscious. We all know that red is a warning of danger or to put on the brakes. On the contrary, blue is a color of security and provides a sense of calm in our lives. Color psychology has always played an important role in our lives.