“Websites use colors everywhere, but creators of sites don’t always understand the theory behind color. They don’t understand the emotional impact that color can have, or how colors interact with one another. They also don’t always understand how colors contrast with one another or how the math behind that works. And they often fail to take into account users with color deficiencies or provide enough sufficient contrast for their users.

Let’s look at color from a theoretical perspective and a practical perspective. We will answer the technical questions of what color contrast is and what goes into creating it and also look at how color deficiencies affect color choice and how we can test and design for all of our users. “