% Deontic hexagram by Berislav \v{Z}arni\'{c}
  \documentclass{article}
  \usepackage{tikz} 
  \begin{document}
  \begin{tikzpicture}[auto,thick,main node/.style={fill=blue!20,rounded corners, 
  font=\rmfamily\footnotesize}]
  \node[main node] (1) at (1,2) {Permitted $\varphi$}; 
  \node[main node] (2) at (3,0.75) {Optional $\varphi$};
  \node[main node] (3) at (5,2) {Gratuitous $\varphi$}; 
  \node[main node] (4) at (5,4) {Forbidden $\varphi$}; 
  \node[main node] (5) at (3,5.25) {Non-optional $\varphi$}; 
  \node[main node] (6) at (1,4) {Obligatory $\varphi$};
  \path
  (6) edge [-,blue] node {} (2) 
  edge [-,blue] node {} (4) 
  edge [->,black] node {} (1) 
  edge [->,brown] node {} (5) 
  edge [-,red] node {} (3) 
  (1) edge [-,green] node {} (5) 
  edge [-,red] node {} (4) 
  edge [-,green] node {} (3) 
  (2) edge [->,brown] node {} (1) 
  edge [-,blue] node {} (4) 
  edge [->, brown] node {} (3) 
  edge [-,red] node {} (5) 
  (3) edge [-,green] node {} (5) 
  (4) edge [->,black] node {} (3)
  (4) edge [->,brown] node {} (5) 
  ;
  \end{tikzpicture}
  \end{document}