Power Button Icon in Black Circle

Imagine a sleek, minimalist power button icon, designed within a deep black circle. This universal symbol, a circle with a vertical line, represents the action of turning devices on or off. Its simple, graphic design ensures it's instantly recognizable and effective for user interfaces across technology, embodying essential control in a clean, understated form.

power button - icon - black - circle - minimalist - symbol - user interface - technology - design