Hi, we bought a light blue house (aluminum siding) with deck all around the house, stairs and dock. Painted all in light blue colour. Roof is darker blue. We live on the lake, their is lots of green around us. We where hoping to paint the deck, dock, sauna and stair to the sauna the same colour, with more strong colour but we do not know what to choose.
I would suggest balancing the colors of your home by painting your deck a similar color to your roof. However you can maintain a still lighter blue shade, like a Colombian blue, to keep the sun off your deck and also give your color combinations depth. Colombian blue, while a lighter shade of blue, is a very well defined shade of blue and will add a splash of color to your deck without being too loud.