This dataset about "color data in CSS".
This dataset show that the list of accepted keywords has undergone many changes during the evolution of CSS:
- CSS Level 1 only included 16 basic colors, called the VGA colors as they were taken from the set of displayable colors on VGA graphics cards.
- CSS Level 2 added the orange keyword.
- Although various colors not in the specification (mostly adapted from the X11 colors list) were supported by early browsers, it wasn't until SVG 1.0 and CSS Colors Level 3 that they were formally defined. They are called the extended color keywords, the X11 colors, or the SVG colors.
- CSS Colors Level 4 added the rebeccapurple keyword to honor web pioneer Eric Meyer.