Dark mode, also known as night mode or dark theme, is a design trend that involves using a dark colour palette for the user interface of digital products, such as websites and apps. In dark mode, the background colour is typically black or dark grey, while the text and other design elements are light-coloured (usually white or light grey).

Dark mode is intended to reduce eye strain, improve readability and provide a more comfortable user experience in low-light environments. Dark mode has become increasingly popular in recent years and is now a standard feature in many digital products, including popular apps and social media platforms. However, factors such as contrast, legibility and accessibility still need to be considered when implementing dark mode to ensure that the design remains usable and inclusive for all users.