- All human eyes are brown at their core, due to the presence of melanin
- Varying levels of the pigment melanin determine how much light is reflected
This feature is part of Color Scope, a series exploring our perception of color, it's use across cultures and other curiosities. Each month we examine a new color.
(CNN)When you're next staring deep into the eyes of your partner, the moment may soon be ruined by the knowledge that, regardless of whether these windows to their soul appear piercingly blue or a shimmering green, the reality is that they are brown.