Nail the exact color burnt sienna in your design by using the code from any one of these systems for color identification.
|RGB||r: 233, g: 116, b: 81|
|HSL||h: 14°, s: 78%, l: 62%|
|HSV||h: 14°, s: 65%, v: 91%|
|CMYK||c: 0%, m: 50%, y: 65%, k: 9%|
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, burnt sienna is made of 91% red, 45% green, and 32% blue.
If you're identifying color for a print project, you're most likely using a CMYK colorspace—the percentages are 0% cyan, 50% magenta, 65% yellow, 9% black.