[Tex/LaTex] how to add blank space before colon in figure caption

spacing

my thesis template is using caption package for figure captions and when i added figure like this 

\begin{figure}[h]
\centering
\includegraphics[width=140mm,keepaspectratio=true]{./fig/CH2/figure1.png}
\vspace{4pt}
\caption{Conceptual framework}
%\label{fig : ch2-1}
\end{figure}

it gives, Figure 2.1: Conceptual framework
but i have to put additional blank space between colon and figure number due to university format.
like this, Figure 2.1 : Conceptual framework

how can i do this. please help. thanks

Best Answer

To achieve what you want, add the following line in your preamble

\DeclareCaptionLabelSeparator{colon}{ : }

MWE

\documentclass{article}
\usepackage[demo]{graphicx} % remove [demo] option in your document
\usepackage{caption}
\DeclareCaptionLabelSeparator{colon}{ : }

\begin{document}
\begin{figure}[h]
\centering
\includegraphics[width=140mm,keepaspectratio=true]{./fig/CH2/figure1.png}
\vspace{4pt}
\caption{Conceptual framework}
%\label{fig : ch2-1}
\end{figure}
\end{document}

Output:

enter image description here

Note that this also changes the behavior for all captions that use a colon as a separator (e.g. tables).

If you want this behavior only for the figure environment, replace the above line with the following:

\DeclareCaptionLabelSeparator{mycolon}{ : }
\captionsetup[figure]{labelsep=mycolon}
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