\documentclass{book}
\usepackage{xcolor,graphicx}
\usepackage{afterpage}

\begin{document}

\fcolorbox{black}{violet!20}{
\begin{minipage}{10cm}
    \includegraphics[width=4mm,height=4mm]{danger.png}
    {\bf This is my title}

    This is my test callout!
\end{minipage}
}

\end{document}