How to have two sets of values on one colorbar

I have plotted a scatter plot on top of a contour plot, however the color properties are not the same. ie) on the contour plot, the highest value is 10 and should be represented at the top of the colorbar, but on the scatter plot, the highest value is 100 and should be at the top also. Is there a way to place a separate range of values on the left side of the colorbar? (Picture below for reference)

This is the code i used to make the first value range

 levels = 2.^(-3:7); %11 levels
 cbh = colorbar ; %Create Colorbar
 cbh.Ticks = linspace(0, 5.5, 11) ; %Create 11 ticks from zero to 1
 cbh.TickLabels = num2cell(levels); %Replace the labels of the ticks with the  
                                     values in level