Red Cross Symbol for Error or Prohibition

This is a classic red 'X' mark set against a dark, plain background. The symbol is widely recognized for indicating an error, a mistake, something incorrect, or a prohibition. Its bold color and simple form make it immediately understandable in various contexts, from digital interfaces to warning signs. The edges show a slight pixelation, giving it a straightforward, iconic look often seen in basic UI elements or status indicators.

red x - error - prohibition - cancel - incorrect - symbol - icon - warning