A Deep Navy siding gives a house instant presence. It reads almost black in shadow and softens to a true blue when the sun hits it, so the whole exterior shifts gently through the day. On a coastal or modern home it feels confident without being cold, and it makes the landscaping and the sky around it look richer too. This is the color that sets the mood, so let it cover the bulk of the walls and carry the scheme.
To keep all that depth from feeling heavy, edge everything in Crisp White. It outlines the windows, the fascia, and the corner boards so the shape of the house stays sharp and clean. Then bring in Natural Cedar on a front door, a porch ceiling, or a slat screen for a hit of real warmth against the navy. Put navy on the body, white on the trim, and let the cedar be the one warm thing your eye lands on as you walk up.