This paper provides an overview of tihe dark mode trend, including its origins, evolution, implementation, advantages, and disadvantages. It offers a detailed insight into the steps and design elements of mobile applications to enable a better understanding and connection with the implementation of the dark mode trend in mobile application design.The paper focuses on the dark mode trend. It explores the origins of dark mode and its beginnings. Conclusions are drawn about the connection between CRT technology and dark mode. The historical context of dark mode is analyzed to provide insight into its early developments and the reasons for its long absence in the design market. After nearly 50 years of unpopularity, dark mode has once again become significant, marking a reversal in the perception and application of this design trend. The advantages and disadvantages of dark mode are analyzed to draw conclusions about its utility. In the practical part of the paper, the implementation of dark mode is analyzed through the example of mobile application design.