Hemangioma or strawberry marks are found in 3 to 10% of infants. These birthmarks are made of extra blood vessels that can appear anywhere from near the surface of the skin to very deep in the skin. Bright red strawberry marks are close to the skin surface, while deeper ones look either blue or purplish. Portwine stains develop in 0.3% of children, and they’re also made of blood vessels. They also can range in color from light red to dark red to purple. Congenital melanocytic nevi or moles are found in 1% of babies. These are pigment producing birthmarks that are usually present when the baby is born. They appear in a range of colors, including tan, brown, or black.