One of the most famous colors starting with M is Magenta. Magenta is a vivid and intense shade of pinkish-purple. It's widely recognized and commonly used in various contexts, including art, design, and printing. Magenta is one of the primary colors in the subtractive color model used in color printing, along with cyan and yellow. This color is often associated with vibrancy and eye-catching visuals, making it a popular choice for a wide range of applications, from fashion to graphic design.