\documentclass{article}
\usepackage{web}
\margins{0pt}{0pt}{0pt}{0pt}   %% Kein Seitenrand
\screensize{100mm}{150mm}      %% Dimensionen: H\"{o}he, Breite des Dokuments

\parindent0pt

\usepackage{pstricks,pstricks-add}

\definecolor{ukraineBlue}{HTML}{005BBB}
\definecolor{ukraineYellow}{HTML}{FFD500}


\begin{document}

\thispagestyle{empty}

\begin{pspicture}(0,0)(15,10)
%% Flagge (Verh\"{a}ltnis 3 Breite : 2 H\"{o}he)
\psframe[linecolor=ukraineBlue,fillstyle=solid,fillcolor=ukraineBlue](0,5)(15,10)
\psframe[linecolor=ukraineYellow,fillstyle=solid,fillcolor=ukraineYellow](0,0)(15,5)
\end{pspicture}
\end{document}
