All colors of light, regardless of their wavelength or frequency, travel at the same speed in a vacuum, which is approximately 299,792,458 meters per second. This speed is commonly denoted by the letter "c" and is referred to as the speed of light in a vacuum. In other media, such as air, water, or glass, the speed of light is slightly slower than its speed in a vacuum. However, the speed of light itself does not depend on the color or wavelength of light.