Blood Stripes appear in several Star Wars costumes (blood strips are the different colored stripes that go down the sides of paints.) The stripes appear in all of Han Solo’s costumes, which is likely why in the Legends EU, they are called Corellian Blood Stripes.
However, blood stripes also appear on Leia’s Commando outfit in (ROTJ), Luke’s end metal ceremony pants in (ANH) and also in the battle handmaiden outfit that Padmé as well as her handmaidens wears in (TPM).
Typically blood stripes are made out of one continuous piece of fabric; this is how the stripes on Leia’s commando pants are done. However, Han’s stripes are done differently, instead of being a single stripe of fabric; Han’s stripes are actually embroidered in a dashed line.