How to make the correlation values appear at a mapcolor?

I am trying to do the mapcolor of my correlation matrix, is it possible to make the correlations values appear at the mapcolor?

figure; 
imagesc(RPEARSONIDHma,[-1 1])
colorbar 
set(gca,'YTick', [1:11],'YTickLabel',{'1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11'})
set(gca,'XTick', [1:11],'XTickLabel',{'1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11'})
set(gcf,'Colormap',autumn)