What is the difference in CMYK vs RGB?
CMYK = Cyan, Magenta, Yellow, and Key or Blac(K); it is also known as 4 Color Process. CMYK is the Commercial Printing format used to print full color.
RGB = Red, Green, and Blue. Electronic devices (TV's, Cellphones, Computer Monitors, and any other device with a color display) use this format to display color. When a file is submitted, all RGB images will need to be converted to CMYK.
So, how do you convert RGB to CMYK?
There are many programs that can help with this conversion. If you do not have access to a program to make your conversions there is a free on-line solution to achieve this.
No, I won't be doing that... Ok, no worries! The proof we will submit to you for approval will automatically be converted to CMYK by our RIP (Raster Image Processor). But, please be aware there are several colors (like Reflex Blue, Violet, and some "spot colors" (PMS/Pantone) that will not convert into an exact match. In general, the best practice when creating your file is to not use spot colors for a 4 color process job.