The appearance of a bluish hue on a phone’s display is often attributed to the screen’s white balance calibration or the activation of a blue light filter. Many modern devices utilize LED backlights, which emit a significant amount of blue light. While this blue light contributes to a bright and vibrant display, it can sometimes be perceived as an overly cool or bluish tint. For example, if the color temperature of the screen is set too high, or a blue light filter is enabled to reduce eye strain, the display will exhibit a noticeable blue coloration.
Managing the emitted blue light from screens holds importance for mitigating potential disruption to sleep patterns and reducing eye fatigue, especially during nighttime use. Historically, adjusting color settings on displays was less common, leading to more pronounced exposure to blue light. The evolution of display technology now offers functionalities, such as adjustable color temperatures and blue light filters, that allow users to personalize their viewing experience and lessen the potential negative impacts associated with prolonged exposure to blue wavelengths.