These curtains in deep sea are a lovely colour.  Don't expect 100% blackout even though it is in the title as it is noted in the description that they are not but they block a lot of light.  One thing I would like to mention is that the picture of the backing of these curtains is not accurate in my opinion.  The backing is a slightly different colour and it a very shiny satin material.  I would say it's more like a mint green on the sets that I have.