Color vision is how your eyes and brain work together to help you see the different colors. The eyes have special cells called cones. Inside your eyes, the cones sense the color of light. Once your eyes see the light, they send a signal to your brain and your brain translates that signal into the different colors we see. If you have color vision, you are able to see the different colors around you. If you don't have color vision, you won't be able to see the colors.