I ordered two of these curtains in the navy blue color and I'm about to order more to put on other windows! These curtains really do a good job at blocking light, they slide easily on the curtain rod, and I love the color! The color, at least the navy blue, does seem accurate to what I received.Yes, perhaps they are not 100% blackout but compared to other brands of "blackout" curtains, these ones are better at blocking light. In the first two pictures, you can see how these curtains (the two hanging in the middle of the window) compare to another brand of "blackout" curtains (the two on either side of the window). And in the last picture you can see how a third brand (and this one with vinyl backing!) compares. The navy blue curtains by Deconovo clearly block more light.The coverage width of the two panels is about 74"The fourth picture shows how some light does penetrate through the curtains, but for my purposes it's not an issue. The fifth picture shows how one panel of these curtains fits over a ~40" wide window. As you can see you could get away with one panel on this size window, however two would be better.I have not washed them as they did not have a strong odor when I received them nor did they have any wrinkles. When I do eventually wash them, I plan to wash on cold and hang dry. I'll try to remember to update on how that turns out!