Matterhorn — Matterhorn is inspired by the famous mountain peak. The deep, muted color of vintage amethyst velvet or a damp, dark mahogany. This color belongs to the Violet and Brown families. Its low, close RGB values, with a subtle dominance of red and blue, create a deep, charcoal-gray tint with a hint of dusky violet-brown. also commonly known as Smoky Plum. Nearest neighbors are DimGray, Gray, and DarkSlateGray.