See how a color looks to people with different types of color vision deficiency. Roughly one in twelve men perceives color differently, so a palette that reads clearly to you may collapse into confusing similar tones for a large slice of your audience. This simulator applies well-known transformation matrices for the three main types, protanopia and deuteranopia (red and green weakness) and tritanopia (blue and yellow weakness), and shows your chosen color beside each simulated version. Comparing them side by side quickly reveals when two colors that look distinct to you would become nearly identical, so you can pick safer combinations. It runs entirely in your browser and nothing is uploaded.