Got these in the Burgundy color & they are great at keeping out the light.  Past few nights have been a full moon shining & reflecting on snow, so it's a bit of a challenge, but truly the only light that gets through is on the edges where the curtains don't reach.  The curtains are total black out.  Very happy with this purchase.  Additionally, most wrinkles came out after a wash & then ironing/steaming.