Variations in eye color within the green spectrum arise from differing concentrations and distributions of melanin, primarily lipochrome, within the iris. These variations can range from a light hazel-green, bordering on amber, to a deep emerald, almost appearing blue in certain lights. Examples include hazel, light green, and deep emerald.
The rarity of green eyes, combined with their striking appearance, has contributed to cultural significance across history. They have been associated with folklore, mythology, and notions of beauty and mystery in various societies. Understanding the genetic factors behind this pigmentation offers insights into human inheritance and population genetics.