CMYK is a color model used by devices that produce color using ink and paint, such as printing machines and printers.
CMYK Black Color Usage
Printed designs must be designed with CMYK Color Code of PSD documents. It is important to use the color of a CMYK design, especially if you use black color with the color code # 000000, you can not get the color you want in print. In CMYK Color Code you need to use Black Color "C = 0 M = 0 Y = 0 K = 100".
What if we use the RGB color code for printing?
If you use RGB instead of CMYK for printing, there will be color distortions. The difference between RGB and CMYK is the simplest expression, which is the RGB color. CMYK is reflection. In RGB, different wavelengths of the light source form the colors, the best example; monitors, phones etc. CMYK is the whole color that the light reflects to us, the color that the dye material (ink) creates.
The bottom image is normally CMYK but the website is RGB, so you can see how much the colors are scratched.
