Phi Symbol (Φ) - Mathematical and Golden Ratio Icon #1897199 (License: Personal Use)

This high-resolution graphic features the uppercase Greek letter phi (Φ), widely used to denote the golden ratio (≈1.618) in mathematics, art, and design. The symbol is rendered in bold white against a smooth radial gradient transitioning from pale pink to vivid red, enclosed by a subtle rounded square with a bright red stroke. Its minimalist aesthetic makes it suitable for digital interfaces, educational materials, and creative branding.

Commonly used on math/STEM websites, design toolkits, educational infographics, or as a favicon/icon for apps related to geometry, aesthetics, or data visualization. Matches user intent for symbolic representation of proportion, harmony, or academic content.