Equivalence 3 pencils Prismacolor to Luminance

Hi, after following lessons I see that we often Matt use Dark Umber and Indigo Blue in Prismacolor for shadows and Cream for lighter parts. What pencil is equivalent to those if I use Luminance Carend’Ache? I want sometimes use Luminance to put my drawing on my wall without the light affect it!( I learn so much and I am passionnate now with so much good lessons!) Happy to read and see the work of others members . My french is better then my english! Mimi