The font used for the chapter number is Euler Roman bold at 70pt, because of the eulerchapternumbers
option. If you omit it, Palatino would be used.
If you want to use the same typeface as the one used for the chapter title, then you can add to the preamble
\renewcommand{\chapterNumber}{%
\fontsize{70}{70}\usefont{\encodingdefault}{\sfdefault}{b}{n}}
Here's a preamble with some changes (I've removed the packages not essential for the example):
\documentclass[headinclude,footinclude,openany,paper=a4,fontsize=12pt]{scrbook}
\usepackage[T1]{fontenc} % recommended for languages different from English
\usepackage[utf8]{inputenc} % recommended for inputting accented characters
\usepackage[pdfspacing]{classicthesis}
\usepackage{arsclassica}
\usepackage{newtxtext,newtxmath} % times is obsolete
\usepackage[scaled=.9]{helvet} % scaling is recommended
\renewcommand{\chapterNumber}{%
\fontsize{70}{70}\usefont{\encodingdefault}{\sfdefault}{b}{n}}
\begin{document}
\mainmatter
\chapter{Un titolo}
\end{document}
Change the number 70 to what suits you best. However, using Times and Helvetica is really like killing the ClassicThesis project and arsclassica
.
Under an 11pt
document class option in book
, \huge
is defined as
\newcommand\huge{\@setfontsize\huge\@xxpt{25}}
which sets the font size to \@xxpt
, or 20.47pt
; see What point (pt) font size are \Large
etc.?
Also, since you're using the explicit
option with titlesec
, placement of font and colour-related changes is best accompanied with the #1
argument as part of \titleformat
:
\titleformat{\chapter}[display]
{}{}{0pt}{\normalfont\color{cyan}\huge\bfseries#1}[\leavevmode\thispagestyle{fancy}]
Best Answer
I don't know if you want to change grey to another colour or to black (which is a colour anyway), but adding this line to the preamble (and
x11names
to the document class):produces this chapter heading: