The white color are NOT blackout curtains. They are room-darkening curtains. I'm a bit disappointed because we paid the extra money for these curtains (passed on machine-washable, room darkening curtains) because they were advertised as blackout. Otherwise, they are made of a heavier fabric and I do think they help regulate the room temperature. However, if you are looking for blackout, these are not the right curtain. We purchased for south-facing rooms, so there is heavy sunlight that comes into the rooms in the afternoon. Photos should reveal their limitation. Background is dark because I am shooting towards the window, so I took a photo of the room without the focal point on the window so you can see how light the room is with the curtains closed.