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Sorry. I am new at this and it is my first time asking a question. I was reading this posting:

how to change chapter/section style in tufte-book?

How does one also get the subsections to change to the same colors as the sections as in the top image?

Also, how does one make the chapter have a similar style to the section headings?

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RobertD
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1 Answers1

25

The tufte documentclass loads the titlesec package, so we have immediate access to all of its excellent features.

Indeed, tufte-common.def contains declarations for each of chapter, section and subsection using the titleformat. We can tweak them to give us what we want- in your case, using colorbox to help us. A complete MWE is at the end, but here's the bit that we need for your requirements:

% chapter format
\titleformat{\chapter}%
  {\huge\rmfamily\itshape\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

Note that I've used \llap to push the number into the left margin- you can tweak the horizontal separator as you wish. The tweaks for section and subsection are very similar.

The only other subtlety is that I have used

\setcounter{secnumdepth}{2}

so that we get numbers for all of the section headings (the default value is -1 which turns all the numbers off).

screenshot

\documentclass[a4paper,twoside]{tufte-book}

\usepackage{xcolor} % for colour
\usepackage{lipsum} % just for sample text

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

% chapter format
\titleformat{\chapter}%
  {\huge\rmfamily\itshape\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

\begin{document}

\chapter{Chapter}
\lipsum[1]
\section{Section}
\lipsum[1]
\subsection{Sub section}
\lipsum[1]

\end{document}
cmhughes
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