thay are several diffrent colors Black red green and many more but thare are not blue
blue color
Tongues are pink in color due to the presence of tiny blood vessels called capillaries that are close to the surface of the tongue. These capillaries give the tongue its pink hue.
Mainly Red and Green but unlike popular belief, they are not blue. Hope the answer helped :)
continuous capillaries continuous capillaries
Capillaries are typically dark purple, because they are so far away from the point where they were oxygenated, and the redness in blood is caused by oxygen being present in the blood. But capillaries can be dark red when they are delivering blood.
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.
Capillaries are the structures that connect arteries to veins.
Capillaries The smallest of the blood vessels: capillaries.
Arteries "feed" the capillaries while veins drain the capillaries.
plmonary veins begin as capillaries and end as capillaries
Sinusoidal Capillaries
The thin walled blood vessels are called capillaries.