River Rouge vs Riverway

Both from Sherwin-Williams's palette. River Rouge reads as grey, while Riverway reads as blue-grey — two distinct hue families, not close cousins. Riverway (LRV 16) reflects noticeably more light than River Rouge (LRV 12), a difference of 4 points that becomes especially apparent in rooms with limited natural light. River Rouge runs warm while Riverway is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 21.5, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.