\documentclass{article}
\usepackage{web}
\margins{0pt}{0pt}{0pt}{0pt}   %% Kein Seitenrand
\screensize{30mm}{50mm}      %% Dimensionen: H\"{o}he, Breite des Dokuments

\parindent0pt

\usepackage{pstricks,pstricks-add}

\definecolor{luxembourgRed}{HTML}{FF1A24} %Pantone 032
\definecolor{luxembourgBlue}{HTML}{26CFFF} %Pantone 299

\begin{document}

\thispagestyle{empty}

\begin{pspicture}(0,0)(5,3)
%% Flagge (Verh\"{a}ltnis 5 Breite : 3 H\"{o}he)

\psframe[linecolor=luxembourgRed,fillstyle=solid,fillcolor=luxembourgRed](0,2)(5,3)
\psframe[linecolor=white,fillstyle=solid,fillcolor=white](0,1)(5,2)
\psframe[linecolor=luxembourgBlue,fillstyle=solid,fillcolor=luxembourgBlue](0,0)(5,1)

\end{pspicture}
\end{document}
