Prohibition Symbol - Red Circle with X Icon for Error or Restriction #1909166 (License: Personal Use)

This high-contrast visual consists of a thick red circular outline enclosing a black field, with a smaller red X positioned in the lower-left quadrant. The design follows universal warning conventions, leveraging red for urgency and the X for negation, making it instantly recognizable across digital interfaces and safety signage.

Commonly used in web forms, mobile apps, and physical signage to denote invalid input, disabled actions, or prohibited behavior; matches user intent seeking visual cues for errors or restrictions.