no
Oxygen gas has no color. Liquid oxygen has a very slight blue color.
oxygen has no colour
no
Oxygen itself does not have a color. In its gaseous form, oxygen is colorless and odorless. The blue color often associated with oxygen in chemistry demonstrations or in certain reactions is due to the presence of impurities or the interaction with other substances.
Oxygen burns with a pale blue color when it undergoes combustion.
When blood lacks oxygen, it appears dark red or maroon in color.
Oxygen itself does not have a color. The color we see when we breathe in oxygen is due to the presence of other gases and particles in the air, as well as the way light interacts with them.
Human blood has red color when oxygenated which is mainly because of red blood cells. Its color changes to purple when present in oxygen deprived circumstances. To restore the color the blood has to be placed in oxygen rich environment.
When blood cells have oxygen they are red, when they have no oxygen they are a darker shade of red.
Capillaries change color as they pass by body cells as the blood they contain loses oxygen. Oxygen-rich blood has a brighter color than oxygen-poor blood.
purple
red