Dark Mode changes the appearance of OneNote interface elements from light to dark, which can improve readability in low light environments, increase the legibility of the user interface as well as your notes, and provide better contrast.
Dark Mode doesn’t actually alter the properties of your page content in any way. It merely adjusts the way in which that content is displayed in your current mode. In Dark Mode, the various text colors, table cell backgrounds, ink strokes, and text highlighters on your pages are displayed with the same fidelity and contrast as they would appear in Light Mode.
Any content you create in OneNote while in Dark Mode will be equally as legible to other notebook co-authors, who may be viewing the same pages in Light Mode.
