Whistle Icon - Free Vector Graphic for Sports, Referees, and Alerts #312322 (License: Personal Use)

This stylized yellow whistle features a smooth gradient from golden-yellow to pale yellow, with a black outline for contrast against dark backgrounds. The design is minimalist yet functional, capturing the essential shape of a classic pea whistle used in sports and emergency contexts. Its vector-friendly form makes it scalable for digital interfaces, print, or app icons.

Commonly used on sports-related websites, referee training materials, safety instruction guides, or as a UI element for alert notifications and sound controls. Matches user intent for quick visual identification of “whistle,” “alert,” or “referee” concepts.