Google has added the Dark Mode feature to several of its Android apps this year. One reason is to prevent the brilliant white background of Android’s Material Design from blinding users. Another reason is that Android models with AMOLED panels save a lot of battery life when Dark Mode is enabled. For those unfamiliar with Dark Mode, this UI setting flips the usual screen set up of dark text on a white background to white text on a dark background.
AMOLED displays do not require the use of a backlight, unlike LCD panels. Thus, with an AMOLED screen, a black color simply means that none of the red, green or blue pixels are turned on. That not only saves battery life, it means that the contrast is sharper when reading text on a black background with an AMOLED screen.
Google is partly to blame for designing so much white into its Material Design. But it is trying to help save eyes and battery life by offering Dark Modes on many of its apps, and that trend will continue. There are many Android users, like yours truly, who love the look of Dark Mode even under well lit conditions.