here and here), but a color extractor is a bit different. Let's say you already have an image that you would like to feature on a Web site, and you would like to create a coordinated color scheme. ColorSuckr is an online tool that you may want to try.
The ColorSuckr site allows you to enter the URL of an image online, and the tools will automatically create a color scheme of samples using the 12 most common colors from an image, each accompanied by Hex, Web safe and RGB color codes. Those wishing to explore further color combinations using the particular swatches provided can link to "Show color schemes," which takes them to schemes assembled by the community of users over at COLOURlovers. Plenty of inspiration here to work with.
ColorSuckr also lets you search for Flickr images on its site. For those wishing to use the tool often, ColorSuckr provides shortcuts to the process in the form of a bookmarklet, as well as a Firefox add-on that enables the process with a simple right-click.
Image: [With churches, Molde, Norway], from the Library of Congress (shown with color scheme from ColorSuckr), ca. 1890 to ca. 1900. Available from Flickr's The Commons, with no known copyright restrictions.