Which mortis is characterized by postmortem red/blue discoloration due to blood hypostasis?

The condition described is specifically livor mortis, which occurs after death and is characterized by the pooling of blood in the lower parts of the body due to gravity. This physiological process results in a blue or purple discoloration of the skin, particularly in areas where blood has settled after the heart has stopped beating and circulation ceases. It typically becomes noticeable within a few hours after death and can provide forensic investigators with valuable information about the position of the body following death.

Rigor mortis, on the other hand, refers to the stiffening of the muscles that occurs after death, due to biochemical changes in muscle tissues. Algor mortis describes the cooling of the body post-death, while postmortem lividity is often used interchangeably with livor mortis, but typically refers to the process before the discoloration becomes fixed to the skin. The key aspect of the question focuses on the postmortem discoloration, which is best identified as livor mortis.