Nail the exact color jet black in your design by using the code from any one of these systems for color identification.
|RGB||r: 10, g: 10, b: 10|
|HSL||h: 0°, s: 0%, l: 4%|
|HSV||h: 0°, s: 0%, v: 4%|
|CMYK||c: 0%, m: 0%, y: 0%, k: 96%|
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, jet black is made of 4% red, 4% green, and 4% blue.
If you're identifying color for a print project, you're most likely using a CMYK colorspace—the percentages are 0% cyan, 0% magenta, 0% yellow, 96% black.