Color and bright illustration on a black backgroundColor and bright illustration on a black background
The text of a well-known manufacturer on a black backgroundThe text of a well-known manufacturer on a black background
Blue-yellow wave of lights on the background of hexagonsBlue-yellow wave of lights on the background of hexagons
The original background for the screensaver on the computerThe original background for the screensaver on the computer
Основной цвет, тон, на к-ром пишется картина. Задний план картины. Общие условия, обстановка, где что-н. происходит ( книжн. ). Единица степени громкости.