A vein bleeding is typically dark red.
This is because venous blood, which is the blood flowing through veins, has already circulated through the body and delivered much of its oxygen to tissues. Consequently, it contains less oxygen than arterial blood, resulting in a darker red color. Arterial blood, on the other hand, which is freshly oxygenated blood traveling from the lungs, is bright red.
Furthermore, venous bleeding is usually characterized by a steady, continuous flow, rather than the pulsatile spurts associated with arterial bleeding, as veins are not under the same high pressure as arteries. This difference in pressure also contributes to the visual appearance of venous bleeding.
