Light-on-dark color scheme

Many modern websites and operating systems offer the user an optional light-on-dark display mode.

Some users find dark mode displays more visually appealing, and claim that it can reduce eye strain.

[4] Predecessors of modern computer screens, such as cathode-ray oscillographs, oscilloscopes, etc., tended to plot graphs and introduce other content as glowing traces on a black background.

With the introduction of computer screens, originally user interfaces were formed on cathode-ray tubes (CRTs) like those used for oscillographs or oscilloscopes.

[8][9] Some operating systems provide tools to change the dark mode state automatically at sundown or sunrise.

[11] There are also a variety of browser add-ons that can re-theme web sites with dark color schemes, also aligning with system theme.

[12] In 2019, a "prefers-color-scheme" option was created for front-end web developers, being a CSS property that signals a user's choice for their system to use a light or dark color theme.

[19] Some argue that a color scheme with light text on a dark background is easier to read on the screen, because the lower overall brightness causes less eyestrain.