After a vasectomy, the color of semen typically remains unchanged and is usually clear, grey, or white with an opalescent quality. The color of semen after a vasectomy can vary widely from person to person, and can depend on a number of factors that are unrelated to the procedure. The color of semen after a vasectomy is primarily determined by the amount and composition of the other fluids contained in the semen. For example, if there is a lower proportion of prostate fluid in the semen, it may appear more watery and clear. Similarly, if there is an increase in the amount of white blood cells due to an infection, the semen may appear more yellow or green in color. Blood in the semen is not uncommon immediately after the procedure, but persistent or heavy bleeding should be reported to a healthcare provider. Changes in semen color after a vasectomy are usually temporary and not a cause for concern. However, in some cases, an abnormal color may signal an underlying infection or medical condition. If you have any concerns or notice any significant changes in the color or appearance of your semen following a vasectomy, it is advisable to consult with your healthcare provider for a proper evaluation and guidance.