The capacity to display the user interface of a specific application in a subdued, darker color palette on Apple’s mobile operating system is a feature that aims to reduce eye strain, particularly in low-light environments. This functionality modifies the application’s default bright theme, replacing it with darker shades, typically grays and blacks, for backgrounds and UI elements, while inverting text and other interface components to maintain legibility.
The adoption of this visual modification is significant due to its potential to conserve battery life on devices with OLED screens, as darker pixels consume less power. It also provides a more comfortable viewing experience for users sensitive to bright displays, contributing to reduced digital eye fatigue. Its emergence reflects a broader trend in software design toward user customization and accessibility features that prioritize user well-being.