Pink Klingon blood has returned to the franchise courtesy of “Star Trek: Discovery” and “Star Trek: Lower Decks.” As such, some fans have proposed scientific reasons for the residue changing color sometimes. “Maybe it’s an oxygenation thing? Like how our blood can be light or dark red depending on where it is in the body. You hit a vein or an artery and they will bleed a different color,” u/StretPharmacist suggested on Reddit.
Redditor u/Willravel, meanwhile, believes certain environments can cause the blood to change color, as evidenced by the lack of oxygen on Chancellor Gorkon’s ship after General Kang’s forces attacked. They wrote, “Assuming there was a drop in oxygen in the atmosphere of the ship, the blood could appear lighter red or even dark pink (arterial blood, which has released its oxygen is a lighter color red than venous or oxygenated blood).”
That said, fans such as u/Tolloworn believe that people shouldn’t overthink the color of the blood, as there are no set rules for what Klingons should be. “The Klingons have been redesigned so many times the colour of the blood is the least of the issues,” they observed. For now, let’s just chalk up inconsistent blood colors as one of the questionable things we ignore in the “Star Trek” franchise.
