Are there numbers for the characters?

documentclass{article}
usepackage{enumitem,pifont,xcolor}% http://ctan.org/pkg/{enumitem,pifont,xcolor}
definecolor{myblue}{RGB}{0,29,119}
begin{document}

begin{itemize}[label={color{myblue}Pifont{pzd}{char36}}]
item Sample text
begin{itemize}[label={color{green}Pifont{pzd}{char228}}]
  item Sample text
  item Sample text
  begin{itemize}[label={color{red!50}Pifont{pzd}{char127}}]
    item Sample text
  end{itemize}
 end{itemize}
end{itemize}
end{document}

In this code, char36, how can I know the shape of a character by using numbers?