Drawing Techniques: a Guide
Dry Media: Combined Chalks: Black and White Chalk  
Artists achieve a looser, more painterly effect by combining black and white chalk. Again, master draftsmen of the Renaissance and Baroque often favored blue paper for the middle tone, and modern traditionalists like Paul Cadmus follow their example.


  Carlo Maratta. Study Sheet. MMLV Fine Arts.
Black Chalk with White Heightening
Black and Red Chalk