These are beautiful, well-made draperies. I discovered, upon choosing the main color to use when redecorating my livingroom, that there are more than "fifty shades of grey." The fabric I chose for my sofa was a grey with tan undertones. The Dove Grey is perfect...especially with the Valspar "Frappe" eggshell I used on the walls. I am guessing the Ash Grey is a blue grey. I would say these are light blocking more than black-out.