There are so many times when I designing a website and have a specific color scheme I want to go with but have trouble matching up complimentary colors to go with it. Here is a nice free online tool that will allow you to color match and blend colors together to obtain a matching palette. The palette can then be downloaded and saved for importing into Photoshop. There is also a gallery of premade palettes you can grab, made by the online community. All in all it is a very slick and valuable resource for anyone designing websites or printed media.
Check it out here.