Named for the metal which is comprised primarily of tin, pewter is a darker shade of gray. Though the metal and its name has no known origin, pewter kitchen utensils and dinnerware dating back to Roman times have been unearthed in London, telling us that pewter has been around since at least the turn of the first millennia.
Pewter retains the gray characteristics of neutrality and seriousness, and its darker hue conveys a certain weightiness.
As a neutral color, it plays well with every color in the spectrum. But when using pewter in design, balance its depth with a lighter color, such as creams and light grays, for the best effect.