Transparency rules

Transparency in iOS materials creates depth while maintaining content legibility. Light transmission levels vary across material types — from the higher transparency of ultra-thin materials to the controlled clarity of regular ones.

The key to effective transparency lies in its contextual behavior. Materials adjust their transparency based on background content complexity and contrast. This adaptive behavior ensures text remains readable while maintaining the material's characteristic visual effect.

System materials automatically balance transparency with vibrancy effects. When transparency increases, vibrancy adjusts to maintain optimal contrast for overlaying content, creating harmonious layering that works across different contexts and color schemes.

Essential transparency considerations:

• Content legibility requirements
• Background complexity handling
• Light and dark mode adaptation
• Interactive state changes