I'm experiencing a very weird problem in Illustrator with a Pantone color. I have a document open with a logo in it that is Pantone 280 C, blue. I copy the logo into a new Illustrator document and it looks purple. But they're both Pantone 280 C. I ran a bunch of tests, and here's what I know:
- Both colors are Pantone 280 C. But the CMYK builds are different. Very odd.
- If I draw a shape in each of the documents and fill it with Pantone 280 C, one is blue and the other is purple.
- The Pantone swatches themselves look different.
- Both documents are in CMYK.
Why are the colors different?
Illustrator (or Pantone actually) changed the way Pantone colors are build in CS6. You don't mention what version you are using, but based on what you do describe, I'd guess you are using CS6.
Prior to CS6 Pantone colors were built on their CMYK formulas. Starting with CS6, Pantone colors are built based upon their LAB formulas. The result is much less vibrant colors. However, CS6 colors will more closely match what comes off press. This was the apparent goal of Pantone. (Although I think it's to just sell more color books as well.)
Pantone+ 280 Solid Coated in Illustrator CS6 Will look slightly purple until you enable Overprint Preview in the View menu. In fact, most Pantone colors will appear slightly off until you choose Overprint Preview.