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Not sure what you mean. The ink guy has a formula guy that he consults to make the color, doesn't he?

OK, this is OT, but I reckon someone here will know: the spectrophotometer for scanning paint chips in order to make a match is now pretty much standard equipment at all paint stores. But what is really happening? Do they use the scan and some sophisticated calculations to make a genuinely...

This is a curiousity question: does anyone know the CI numbers of the dyes used to make the CYM inks for the GRACoL profile?

Stephen, the simple answer is: I don't know. I would need to find a printer offering an extended gamut and discuss with them how predictable the results can be for colors outside the traditional gamut. I have been unable to find any trade printers offering an extended gamut.

Gordo - can you recommend any print shops that would be worth my time to contact (see previous comment above).

Could anyone recommend any printshops that offer an extended gamut for sheet-fed printing who would be able to supply me with such their profile? This is for an artbook project. Right now the plan is to print it using GRACoL. But there are some colors that are OOG. It might be interesting to see...

Could I specify a LAB value that is a bit outside the GRACoL gamut and ask them to hit it for that one spot?

How does a person design for one of those processes you mention? I can plug any color I know to be in the CMYK gamut into InDesign and let Adobe do the rest. Is there something similar available for those?

Out of curiosity: what killed Hexachrome? Was it the complexity of doing the separations? Or was there just no demand for a 6 color process? Any chance we will see another attempt at a 6 color process in the future? I've heard a bit about Opaltone, but I don't think I understand what it is...

Thanks. These are for a mailing to end users, not in-store use. The manufacturer does not have the LAB values so I'll have to get them myself. Do you think an X-Rite i1 is up to the job? What is "OB content"? Whare are "GCG screen tint builds"? Lets assume this is going to a G7 qualified...

For an accurate color chart, what is the best method for "capturing" the colors? I have a client who wants "the most accurate possible" printed color chart for a line of 89 artists paint colors. They are made with 'traditional" pigments, which means that none of them are blindingly bright. I'm...

Invest in having a sales person who responds to every email promptly and completely. I am amazed at how very, very bad most print shops are in this regard. I send an email inquiry - and sometime later I get a reply that says "call me and we'll discuss". If I wanted to waste time on phone...

They were similar in hue, value and chroma, but there was an unevenness - a dirtiness - in the printed colors that was there in the proof. I was told that is because the proof comes from an ink jet printer and it does not mimic the dot structure of the final piece.

Thanks, and apologies, I know I've asked you this before, but: what it the definition of "tone" in this context. That seems to be one of those words that has about a hundred different definitions.

I'm very new at this. I've seen people peering through loupes, but I have no idea what they are hoping to learn. If you could fill me, I would appreciate it. It is not an entirely theoretical question: the last job I did had some light "colored greys" in it. By which I mean colors that were...

Can you explain how it is both true that they are not change but they are not the same?

PS: Sheetfed job, using GRACoL profile.

This is all very interesting and helpful, thanks to all of you. As we know, there are many different CMYK builds that can produce the same color. Lets say that I've got some very light (L value higher than 80) but somewhat dull colors in my design. I don't want any black in my build, because...

I've never heard of that instrument type before. Interesting. "What's spec'ed as Cyan 30 - Yellow 100 will most likely not be those values on the printed sheet. " Also very interesting. Which leads me to another question. I have often wondered why we spec colors as CMYK builds instead of LAB...

I see. So even though I did not supply a LAB value, the print shop would, on its own initiative, look up what the LAB value should be for the requested build, and use that for their analysis. Correct?