If blood is red, how come our veins appear blue?


3 Answers

Rooster Cogburn Profile
Rooster Cogburn , Rooster Cogburn, answered

Best explanation from ScienceLine.

  1. Blood in your veins has very little oxygen and is a dark red color that looks almost blue when covered by your skin. Your arteries have bright red blood because it has a lot of oxygen in it that is being carried throughout your body to be used by tissues.

Lily Watson Profile
Lily Watson answered

I've read that when it hits the oxygen (when you get cut and bleed) that it turns red. And something about chemical reaction, something like that.

thanked the writer.
Yo Kass
Yo Kass commented
That's actually a common misconception. The blood in your veins is red, but appears blue due to the way light travels through your skin.

Answer Question