Which color is typically associated with venous blood?

The color typically associated with venous blood is dark red. This is due to the lower oxygen content in venous blood compared to arterial blood. Arterial blood, which carries oxygen from the lungs to the rest of the body, is bright red because it is rich in oxygen. As blood circulates through the body, it delivers oxygen to tissues and picks up carbon dioxide, resulting in venous blood being lower in oxygen and appearing darker. The darker color is indicative of the blood returning to the heart to be re-oxygenated in the lungs.

Other color options do not accurately represent venous blood. Bright red is associated with oxygen-rich arterial blood, while brown and pale pink do not reflect the actual coloration of blood in the body.