So maybe painting an open space of approximately 375 square feet in a dark dark blue might be just a little too much? Instead, these grey-greens are calling to me, definitely lighter that the rooms pictured here but still able...
deep grey-blue, built-in bookcases with jointed sconces above, herringbone detail in fireplace
French Grey - Victorian Paint Colours
Floor-to-ceiling and wall-to-wall bookshelves
Farrow and Ball