HTML 4 for the World Wide Web by Elizabeth Castro - Basic to intermediate HTML coding, including a color chart. Also information on CSS and browser extensions. - http://safari.peachpit.com/0201354934
Learn HTML in a Weekend - Basic and intermediate HTML, tables, frames, forms, graphics, CSS, XHTML/XML, image maps, Java applets, and adding guestbooks. Includes reference code lists. - http://callihan.com/learn3/