Table caption indentation

I have a table that looks like this

My caption is defined as follows:

DeclareCaptionFormat{labelstyle}{%
    setlengthfboxsep{3pt}%
    colorbox{astrol-blue}{{#1}}#2#3
} 

captionsetup[table]{singlelinecheck=false, labelfont={color=white}}

and inside the table I do

captionsetup{type=table, format=labelstyle}

With what command can I slightly indent the caption so the blue box is left-aligned with hline of my table?