It can, but understand the contrast. Cream walls have a clear warm undertone, and Cloud at the window would read as a deliberate cool contrast - which can be a strong design choice if other room elements support it (gray sofa, brushed nickel lighting, slate floor) or an unwanted clash if the room is otherwise fully warm. If the goal is for the curtains to disappear into the cream palette, Cotton or Egg Shell will sit more comfortably. If the goal is to anchor a cool note against warm walls, Cloud works.