a HTML5 color picker based on xkcd's color survey.
(also an experiment on using RequireJS, Backbone.js, Bootstrap, HTML5 Boilerplate's node build script and some color similarity metrics I found on a stackoverflow question)
here: http://xkcdcp.martinblech.com/
Forked to add hex input support. The grunt stuff doesn't work anymore, but just serving it unbundled works fine.
Viewable here: http://klaash.github.io/xkcdcolorpicker/