But in case a larger number of capillaries rupture in the same area, it will result in something known as purpura. If you have purpura, then you will most likely get a reddish-purple discoloration, whose sizes vary between 2 mm and 1 cm in width. If ever many numbers of capillaries break close together, the blood would pool under the surface of the skin forming an ecchymosis which is a bluish-purple or black bruise that occurs in a wide range of sizes.