Here's a technique that works in SAS 9.4m7 (and probably earlier versions as well), using a custom ods style to control most of the normal (non-title/non-label) text in the graph. Since I don't have your data, I use some 'random' data from the sashelp sample lib to demonstrate.   ods path(prepend) work.templat(update); proc template; define style my_style; parent=styles.htmlblue; class GraphValueText / font = ("<sans-serif>, <MTsans-serif>",14pt); end; run;   ods html style=my_style;   proc sgplot data=sashelp.class; heatmap x=height y=weight / colorresponse=weight colorstat=mean colormodel=(bigb red) xbinsize=0.25 ; xaxis label='Clock time' labelattrs=(size=14pt); yaxis label='My variable' labelattrs=(size=14pt); gradlegend / title='colormap' titleattrs=(size=14pt); run;   ... View more