# Alternate chapter style

I wonder how to make this chapter style.

Currently, I am using this style.

\usepackage{titlesec}
\titleformat{\chapter}
{\normalfont\LARGE\bfseries\color{Cerulean}}{\thechapter.}{1em}{}


• Could you please post a small compilable code, and explain what is not as you want? – Bernard Mar 31 '19 at 11:20
• I don't have a small compilable code, instead i have the full latex document of thesis. I want to change the default chapter style. – chelsea Mar 31 '19 at 11:28
• Can't you extract the necessary code to obtain a compilable document? You don't what is you document class, which packages you load, &c. Do you want a sans font for your chapter titles, as the image seems to suggest? – Bernard Mar 31 '19 at 11:31
• I answered my own question. But what font family should I use? – chelsea Mar 31 '19 at 12:33
• In the first argument, insert \sffamily instead of \normalfont, and delete it from the second argument. – Bernard Mar 31 '19 at 12:36

\usepackage{titlesec}