Nail the exact color aqua in your design by using the code from any one of these systems for color identification.
|RGB||r: 51, g: 255, b: 255|
|HSL||h: 180°, s: 100%, l: 60%|
|HSV||h: 180°, s: 80%, v: 100%|
|CMYK||c: 80%, m: 0%, y: 0%, k: 0%|
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, aqua is made of 20% red, 100% green, and 100% blue.
If you're identifying color for a print project, you're most likely using a CMYK colorspace—the percentages are 80% cyan, 0% magenta, 0% yellow, 0% black.