#404b57 - Dark Night color

A muted, mid-to-dark slate blue-gray with cool undertones, evoking stormy seas and industrial steel. It reads as sophisticated and restrained, providing a calm, professional backdrop that still retains depth and subtle blue character. Pairs beautifully with warm metallics like copper or brass, soft creams, and mustard accents to add contrast, or with lighter blues and pale grays for a monochromatic palette. Ideal for UI backgrounds, branding, interior accents, or refined, maritime-inspired designs.