%% 
%%  A DANTE-Edition example
%% 
%%  Example 02-01-15 on page 20.
%% 
%%  Copyright (C) 2011 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{129.70511pt}
\setlength\parindent{0pt}

\usepackage{xcolor}

\begin{document}
\definecolor{HTMLcolour}{HTML}{006666}% #006666
\ttfamily{\color{HTMLcolour}HTML colour 006666}\\
rgb : \convertcolorspec{HTML}{006666}{rgb}\RGBcolour
\RGBcolour\\
cmyk: \convertcolorspec{HTML}{006666}{cmyk}\RGBcolour
\RGBcolour\\
hsb : \convertcolorspec{HTML}{006666}{hsb}\RGBcolour
\RGBcolour
\end{document}