Kuler

This is a pretty neat development at Adobe. Make color palettes till past your bed time!

It is described as being "the first web-hosted application from Adobe Labs designed both to stand alone and to complement Adobe Creative Suite 2.", "Kuler is all about color: color for exploration, inspiration, experimentation and sharing."

With it you can easily search, create, and share color themes online, then you can download themes you like as an Adobe Swatch Exchange (.ase) file for use in Illustrator CS2, InDesign CS2, Photoshop CS2, and more.

Be weary though... They may soon start charging for this service as it is currently within their "lab" experiments. Once it's been perfected, they may charge, who knows. But if so, it would be dumb since all the content is user generated....