Nail the exact color pewter in your design by using the code from any one of these systems for color identification.
|RGB||r: 233, g: 234, b: 236|
|HSL||h: 220°, s: 7%, l: 92%|
|HSV||h: 220°, s: 1%, v: 93%|
|CMYK||c: 1%, m: 1%, y: 0%, k: 7%|
If you're identifying color for pretty much anything digital, you're working in an RGB colorspace. If the project you're working on requires percentage representation, pewter is made of 91% red, 92% green, and 93% blue.
If you're identifying color for a print project, you're most likely using a CMYK colorspace—the percentages are 1% cyan, 1% magenta, 0% yellow, 7% black.