kuler is the first web-hosted application from Adobe Labs designed both to stand alone and to complement Adobe® Creative Suite® software. Built using Adobe® Flash® and ActionScript 3.0, kuler is all about color: color for exploration, inspiration, experimentation and sharing.
New: Now you can develop an application/website colored by kuler, using the kuler APIs. Also try the cross-platform kuler desktop. You must first install Adobe AIR, then install the kuler desktop.