How to see RGB values for colors in color selector?

I have an app with view background colors of the Cayenne standard color from the crayon selection options. I would like to change the background color of a view showing a grouped tableview. I know how to do this programmatically by setting the RGB values (and can set it to any color I like), but how do I find what the RGB values are of the standard Cayenne color to make it the same? The reason I need to do it programmatically is I cannot seem to get the view to change its background color in IB when a tableview is on the view.


Thanks,
CB

 

Thanks for this but when i switch to slider view I only see grayscale slider, brightness and opacity. I am not sure where you mean to look