CSS.coloratum is a nifty little tool that helps you:

• Share colors with friends and colleagues (never have to go through describing a shade again, just give them the link!)
• Check out what RGB & HSL values correspond to that color keyword you keep using
• Covert HSL to RGB, because you're done with your prototype and now it has to work in IE8 too
• ...and much more!

CSS.coloratum is built with cutting edge open web technologies, so it only works with modern browsers. In its 3KB, it makes use of cool new technologies like:

• HTML5: canvas, autofocus, output, oninput event, hashchange event
• CSS3: gradients, media queries, box-sizing, background-clip, border-radius, shadows, RGBA
• ES5: Array#map()
• Selectors API

• CSS.coloratum is one of my 2 entries to the 10K contest. If you like it, vote for it!
• My blog post about it
• It's released under an MIT-like License, like most of my stuff. In short, do whatever the eff you want with it, as long as you give me credit in some decent way.