J.L. Morton's site explores the science, psychology, sociology, and use of color.
from Smashing Magazine
Put two valid CSS color values, in the format you choose--hex, RGB, RGB%--then choose the number of midpoints you'd like between them and blend. You'll get intermediate colors with their hexadecimal codes.
Find color analogic, contrasting, and monochromatic schemes and test them with various vision abnormalities.
Lets you lighten or darken a color scheme and displays hexadecimal codes.
Explore, create and share color themes
Bob Stein has arranged the 216 hexadecimal HTML color codes by hue and presents them as cards, charts and swatches, some free and some at cost.
This section of the cloford.com website provides a web-safe diagram, web-smart colours, named colours, 500+ colours, web-safe colours by hue, and colour links.
American Memory provides free and open access through the Internet to written and spoken words, sound recordings, still and moving images, prints, maps, and sheet music that document the American experience.
Creative Commons provides free tools that let authors, scientists, artists, and educators easily mark their creative work with the freedoms they want it to carry. Search for audio, video, images, text, and more.
"Where photo reference lives." Contains high-resolution digital stock "to provide free image reference material for use in all creative pursuits."
Long recognized for the stunning photography that accompanies its articles, the online site provides a photography section that features photo galleries by subject and more.
Access to over 600,000 images from primary sources & printed rarities in the collections of The NY Public Library, including illuminated manuscripts, historical maps, vintage posters, rare prints & photographs, illustrated books, printed ephemera, & more.
Has photographs and an "ImageBlender" where you can edit digital images. "Copyright friendly images for education" available for use in teacher or student projects.
The Graphics Fairy posts a free piece of vintage clip art every day, perhaps useful for your next craft project. There are more than 1,000 graphics to choose from, plus tutorials showing different methods for transferring images—a lovely example is this drawer knob project. (via How About Orange)
A dense launch site for Adobe Photoshop links, tips, and resources.
Helpful tutorials on all types of Adobe software from the makers themselves.