Dens have always invited experimentation. Some are treated as reverent studies dedicated to working, others as laid-back, lounge-y hangouts for napping and Netflix. It signifies a different meaning for everyone—even more reason to let it stand out as a moody statement room by cocooning it in dark, enigmatic hues that feel equal parts comforting and mischievous. Whether it’s a small light-deprived lair or a commodious sitting room peppered with artwork and vintage decor, lush shades of blue, green, black, and purple instantly turn these nine den design ideas from AD PRO Directory members into sanctuaries.
Although glamorous London jazz clubs were the muses for a den in Newton, Massachusetts, Cecilia Casagrande of Brookline-based Casagrande Studio was eager for it to feel