I'm curious about the history of computer screen design. Most people today can easily switch between dark mode and light mode on their devices. However, it seems like back in the early 2000s, light mode became the norm, and switching wasn't as simple. I remember a time when everything was dark mode, with command line interfaces being the standard. Why was dark mode preferred back then instead of a light background? When did the transition to light mode happen? Was it right after GUIs were introduced?
5 Answers
The dark mode came about due to cost and technical reasons initially. Only the characters had to be illuminated, which made it cheaper. Sure, demos of light mode existed in the late '60s, but dark mode helped with mass production, and the switch to GUI systems like the Macintosh made light mode more popular over time. However, the transition wasn't immediate; it gradually took hold.
The change started around 1984 with the Macintosh introducing light mode as the default. It had been around prior, but this was when it became more mainstream. The goal was to create a WYSIWYG experience that mirrored print layout, which drove the preference for lighter screens. Plus, hackers have always favored light settings for easier reading and a customizable UI. Now we're back to dark mode as a trendy option since it uses less power on devices!
GUIs started gaining popularity primarily for document processing, which makes sense for a white text on a black background, similar to a printed page. In the early command line days, everything was black on white because you're focusing on turning pixels 'on' instead of turning them on around a shape you want. Also, the technology back then had limitations, especially with the lifespan of CRTs, so it created a preference for darker backgrounds to preserve screen life.
The Macintosh was a big player in this switch when it launched in the mid-1980s. Windows followed with its first release. The idea was that a white background mimics the look of printed paper, which people were used to. Plus, having a dark mode back then was less complicated and used less energy on older screens. It's easier to light up just a few pixels rather than keeping the whole screen lit for dark backgrounds. Definitely a technical and cost-saving reason behind it!
I can't pinpoint an exact date, but it happened well before the 2000s. If you check out screenshots from Windows 95 or Windows NT, you'll see that light mode was already in play. I remember my Amiga 500 from around 1990 had a bright GUI with color options!

Right! It's interesting how trends keep cycling back. Dark mode is definitely having its moment again, especially for battery life!