Not blackout!!! These curtains are lined and are a beautiful heavy material but are not blackout as you can see from my photos.  One picture is with the curtain closed and blinds up (room was still pretty light) and the other is with blinds closed (much better, still not blackout).  They are still a gorgeous curtain that drapes beautifully and I will be keeping mine.  This is the navy blue.  The drape is a natural linen color.