\documentclass[a4paper]{biditufte-book}

\usepackage{xcolor} % for colour

% add numbers to chapters, sections, subsections
\setcounter{secnumdepth}{2}

% chapter format
\titleformat{\chapter}%
  {\huge\color{red}}% format applied to label+text
  {\llap{\colorbox{red}{\parbox{1.5cm}{\hfill\itshape\huge\color{white}\thechapter}}}}% label
  {2pt}% horizontal separation between label and title body
  {}% before the title body
  []% after the title body

% section format
\titleformat{\section}%
  {\normalfont\Large\itshape\color{orange}}% format applied to label+text
  {\llap{\colorbox{orange}{\parbox{1.5cm}{\hfill\color{white}\thesection}}}}% label
  {1em}% horizontal separation between label and title body
  {}% before the title body
  []% after the title body

% subsection format
\titleformat{\subsection}%
  {\normalfont\large\itshape\color{blue}}% format applied to label+text
  {\llap{\colorbox{blue}{\parbox{1.5cm}{\hfill\color{white}\thesubsection}}}}% label
  {1em}% horizontal separation between label and title body
  {}% before the title body
  []% after the title body
  
\usepackage{ptext}
\usepackage[localise=on]{xepersian}
\settextfont[Scale=1.2]{B Zar}
\setdigitfont[Scale=1]{B Zar}

\begin{document}

\chapter{فصل}
\ptext[1]
\section{قسمت}
\ptext[1]
\subsection{ زیر قسمت}
\ptext[1]

\end{document}