ColorSchemer really amazing powerfull colour studio.
All features You easy find:
There is a lot of instant colour shemes:colorschemer.com/studio_info.php
colorschemer.com/schemes/
This also a free online tool:
But I reccomend ivest this small fee for this powerfull toolcolorschemer.com/online.html
There is also nice mini program: ColorSchemer ColorPix - little color picker - totally for free.
colorschemer.com/colorpix_info.php