\documentclass[12pt]{article}

\usepackage{color}
\usepackage{graphicx}

\begin{document}

\scalebox{10}{\rotatebox{4}{\textcolor{red}{\( \varphi \)}}\kern-.7em\raisebox{-.15em}{\textcolor{blue}{\( \pi \)}}}
\\[3ex]
\scalebox{1.8}{\rotatebox{4}{\textcolor{red}{\( \varphi \)}}\kern-.69em\raisebox{-.15em}{\textcolor{blue}{\( \pi \)}}}

\end{document}
