All about color
When it comes to signs and printing there are 3 basic –tools- for color
Your eye is by far the most sensitive, capable to seeing extremes and different other methods can not. It also has no map, so what one person sees is very hard to describe – in exact terms – to the next person
RGB (Red green Blue) schemes - Scanners, digital cameras and computer monitors use red, green and blue (RGB) light to display color. The standards for RGB are not uniform. There are difference standards. sRGB is a 1998 Adobe standard that is the best. Standard RGB also exists, but different manufacturers implemented it differently
CMYK (cyan, magenta, yellow and black) - Commercial printing presses print with cyan, magenta, yellow and black (CMYK) ink, called process printing, instead of RGB light, and therefore produce a different range of color. To print on a four-color press, all RGB files must be converted into CMYK color.
The challenge is to manage what the eye sees, how the camera and monitor slightly change that and how the printer reads it to make sure the original colors are as closely copies as we can. This is called color management
Certain RGB colors that you can see on your monitor or camera (in particular, bright vibrant colors) simply cannot be replicated with standard CMYK inks. These unachievable RGB colors are said to be "out of the CMYK color gamut." When selecting colors for your print project, we use using CMYK color builds to avoid potential RGB conversion issues.