A dilute calico cat is a type of calico cat whose colors are more muted than the traditional calico cat. A dilute calico will have colors that are lighter: more creams and blues than oranges and blacks.
Calico cats are defined by the presence of three colors: black, orange and white, so a dilute calico cat is one that has lighter versions of these colors. Blacks are more smoke-colored in hue, leaning toward a blue coloring. Oranges are more creamy, even light reddish in some cats. Dilute calico cats are rare due to the three specific genes required to make the cat's colors diluted.