Amber eyes and brown eyes have the same pigments, but amber eyes are heavier on the pheomelanin (lighter red or yellow hues), whereas brown eyes possess more eumelanin. Amber eyes are extremely rare, with only about 5% of people having true amber eyes. Amber eyes may appear golden or brown, depending on the light reflected off them, while brown eyes stay the same regardless of the light. The main difference between amber eyes and brown eyes is the amount of melanin produced. Amber eyes are a solid color with a strong yellowish/golden and russet/coppery tint, which may be due to the yellow pigment called lipochrome. Amber eyes should not be confused with hazel eyes, which usually tend to have many other colors, including green, brown, and orange, and may appear to shift in color and consist of flecks and ripples, while amber eyes are of a solid gold hue. Brown is the most common eye color, with over half of the people in the world having brown eyes. Green is the least common eye color, but it is found most frequently in northern and central Europe.