Blood plasma makes up more than half of human blood and is completely pale yellow

You think your blood is a dramatic crimson, but mostly it's the color of stale urine. While the red blood cells give blood its famous hue, they are suspended in plasma, a yellowish liquid that makes up 55% of your blood volume. Plasma carries water, salts, and vital enzymes. So the next time you dramatically bleed in a horror movie scenario, remember you're mostly just leaking yellow soup.