What you demonstrated here are the limitations of color gamut. RGB is colored light and contains colors that cannot be duplicated in any reflective medium. The inverse is also true, there are certain colors obtained by CMYK or special ink mixes that cannot be exactly duplicated in RGB. Understanding these limitations is key to working in printing.
Go by the numbers. I'm not familiar with your program, but somewhere there should be a color picker; usually an eyedropper icon that, when you hover over a color, it will show you the generated values in RGB and CMYK.
Get a color swash book or CMYK color wheel from a printer or printer supply house. Find the target color you want in the book or wheel. Match up the colors on your output with the book or wheel by the numbers for cyan, magenta, yellow, black. Ignore what you see, what you see is not always (almost never) what you get.
I know I am "side-stepping" your question because what you are asking is not the solution. The above is the solution. The bottom line is you may not get that "beautiful red" because it may not be printable in reflective pigments.
I don't even know if your program supports CMYK conversions, as it's a hefty set of color lookup tables to carry. Generally these are found in a"color mode" menu. If you find that and see "Grayscale," "Bitmap", and "RGB," but don't see CMYK, it's not supported.
Best approach is to ask support [corel.com].