Eye colour is a genetic trait that is passed down from your parents. Multiple genes are responsible for determining eye colour, with brown being the more dominant colour when compared to blue or green. If you are partially colorblind, it can be difficult to truly tell what colour your eyes are. In addition, sometimes eye colour is hard to determine because it changes subtly in response to the light, the colour clothing you are wearing, or other factors. Determining your eye colour can be accomplished with a bit of research and with some assistance.
Ask a friend to look at your eyes and tell you what colour they appear to be while you are standing in natural light, wearing a white shirt.
Examine a colour chart and compare it to your eyes to pick a colour that most closely matches the eye colour.
Check any medical records on file. Eye colour is often included and you can get an official diagnosis regarding your eye colour.