Makes viewing more pleasant for the eyes
How to Enable Dark Mode in the YouTube App
Dark mode is a popular feature in most major apps, such as YouTube, Facebook, and more. It temporarily turns the light elements on your device’s screen or interface from light to dark.
Such elements include the menus, app wallpapers, and basic parts of the device's operating system, be it a smartphone, tablet, or computer.
The main purpose of YouTube’s dark mode (or night mode) is to prevent eye strain, especially in low-light environments, which can affect your night vision. For people with color-related visual impairments, dark mode can make it easier to use their device and increase their productivity.