What is the primary color of rocks on the surface of Venus?

The primary color of rocks on the surface of Venus is gray. This coloration is largely due to the mineral composition of the Venusian surface, which includes basaltic rock formations that are prevalent across the planet. These basaltic rocks are formed from volcanic activity and have a gray appearance, similar to volcanic rock found on Earth.

Additionally, the atmosphere of Venus, filled with sulfuric acid clouds and other gases, contributes to an overall dull gray appearance when viewed from orbit. This characteristic stands out against various hues of other celestial bodies, particularly those with different atmospheric compositions or surface materials. Understanding the surface composition and conditions of Venus provides insights into its geological history and processes, further emphasizing the significance of gray as the primary color of its rocks.