Nail the exact color emerald green in your design by using the code from any one of these systems for color identification.
|RGB||r: 80, g: 200, b: 120|
|HSL||h: 140°, s: 52%, l: 55%|
|HSV||h: 140°, s: 60%, v: 78%|
|CMYK||c: 60%, m: 0%, y: 40%, k: 22%|
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, emerald green is made of 31% red, 78% green, and 47% blue.
If you're identifying color for a print project, you're most likely using a CMYK colorspace—the percentages are 60% cyan, 0% magenta, 40% yellow, 22% black.