1. A method of determining paternity based on eye color, the method comprising: accessing a color digital image of at least one of a male parental candidate, a female parental candidate, and a child candidate; determining an eye color of each of the male parental candidate, the female parental candidate, and the child candidate, wherein the eye color of at least one of the male parental candidate, the female parental candidate, and the child candidate is determined based on the accessed color digital image; and determining a paternity likelihood of the male parental candidate and the female parental candidate with regard to the child candidate based on the determined eye color of the male parental candidate, the female parental candidate, and the child candidate.