>I am designing a logo using a royal blue that looks great onscreen but is
 >out of the CMYK gamut. I am wondering if there is any way to reproduce
the
 >colour faithfully when the logo is printed on a book using CMYK? I did
 >explain to the client that the blue could look different when printed,
but
 >nonetheless I am wondering if there is a way to achieve it.
 >
 >This is probably an awfully ignorant question - I don't know as much
about
 >commercial printing as I should. But if I can do a faithful colour
printout
 >on my home printer (from the RGB gamut), why can't a commercial printer
 >achieve the same thing somehow? I know the CMYK process is different...
but
 >perhaps there is some way of incorporating a spot colour to achieve the
 >right blue? Or perhaps a commercial printer will be able to reproduce the
 >colour better using CMYK than my home printer can in CMYK mode?

I have been reading about this.   This is my subjective impression from
other's conversations:

1. Don't expect the commercial result to resemble what comes out of your
printer.
2. There are ways to tweak out of gamut colors so that they will print more
brightly or correctly in CMYK, but you are still limited to what can be
made with CMYK inks.
3.  Printers can use spot colors of almost anything; this will cost extra
money.

If you know what commercial press it will be, it might be productive to
talk to their prepress people.
They might have color swatches that would let you see how close you can
come.
The question may end up being one of money vs. how badly the client wants
that exact color.


These are only impressions from my very limited interactions with pre-press
people about this topic, so maybe others will weigh in in more accurate
detail.

Liz Day
Indianapolis