1)   ColorCache 4.2
ColorCache is a powerful color picker, color scheme generator and palette management system. Select colors from your screen or use the built-in tools to create color schemes. Preview results in your own web pages or export in a variety of formats.
Color, Colour, color scheme, web site colours, picker, dropper, tool, palette, color theory, multi-monitor,

 2)   ColorMania 3.2
ColorMania is a extended colorpicker with an eyedropper component and a screen Magnifier. ColorMania lets you easyly select and modify colors. It's the ideal tool for website and application developers. The latest version has undo/redo functionality.
Color Picker, Color, Eyedropper, Screen Magnifier, Color scheme,

 3)   ColorSkate 1.40
Discover harmonious color groupings in your photographs, on your desktop, and on the internet. Or choose a color from Web-Safe, Web-Smart or Windows 24 bit color palettes. And for each color automatically generate many additional harmonious colors.
screen capture, color picker, color scheme, web, html, rgb,