"Web Safe" colors

When the World Wide Web was born, there were still a lot of 8-bit monitors in use which were limited to reproducing 216 colors. Because of that, web (and game) designers used what was called a "web safe" color palette.

Contemporary monitors can reproduce millions of colors so it is no longer necessary to limit Web pages to the web safe choices.

This is the "web safe" palette of 216 colors that will reproduce accurately with all color-capable platforms including those using 8-bit monitors such as older computers, early game consoles and inexpensive mobile devices.

Photoshop allows you to limit its color picker so only web-safe colors are shown. You can copy the hex value for any color picker choice and paste into your HTML:

Example: