Follow-up Comment #2, bug #346 (project tex4ht): The OP later edited his question and included more broken examples, one for colortbl itself, the other for xcolor.
It is now possible to use the following commands: \definecolor{Blue}{rgb}{0,.6,1} \begin{tabular}{ >{\color[named]{Blue}} cc} Blue&White\\ Blue&White \end{tabular} \begin{tabular}{ >{\color[rgb]{0,.6,1}} cc} Blue&White\\ Blue&White \end{tabular} With xcolor, it is now possible to use colors defined in the preamble: \documentclass{article} \usepackage{xcolor} \definecolor{Blue}{rgb}{0,.6,1} \begin{document} \textcolor{Blue}{Blue---I don't think so.} \textcolor{red!72.75}{Red text} \textcolor{.!50}{Gray text} \textcolor{Blue}{Blue again} \end{document} _______________________________________________________ Reply to this item at: <http://puszcza.gnu.org.ua/bugs/?346> _______________________________________________ Message sent via/by Puszcza http://puszcza.gnu.org.ua/