The iOS feature that automatically adjusts the color temperature of the device’s display to warmer hues during the evening and nighttime hours. This functionality aims to reduce the amount of blue light emitted by the screen. As an example, the display might shift from a cooler, more bluish tone to a warmer, more yellowish or orange tone as the evening progresses.
Its importance lies in the potential to mitigate disruption to sleep patterns caused by exposure to blue light from electronic devices before bedtime. By reducing blue light emission, this feature may contribute to better sleep quality and overall well-being. The functionality was introduced as a standard feature in iOS, reflecting a growing awareness of the impact of screen exposure on circadian rhythms.