Option #1: Rebeccapurple

This color has meaningful history to CSS, is a keyword easily used in css rebeccapurple and has great contrast with the bright light letters on it.

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Option #2: Blue

CSS original logos, the W3C logos, and the CSS3 shield have all been blue, or a tint/shade of it. It's recognizable, unoriginal, and has good contrast.

However, there are multiple blue potentials. Spec standard link blue, blue from the W3C logo, and blue from the CSS3 shield (the light blue from the shield does not provide enough contrast).


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