Both are cool gray neutrals, but the character is different. Platinum has a slightly more reflective, luxe quality - the cool silver picks up subtle shifts in light angle and reads as a more considered, premium tone. Metal is flatter and more uniform - a confident pewter-gray without the same subtle reflectivity. Platinum suits considered, refined rooms - hotel-style bedrooms, formal living rooms. Metal suits more architectural, industrial, or strictly modern spaces - lofts, commercial-style kitchens, minimal home offices. Both have identical specs, fabric, and performance.