PMS colour changes from 1 file to another.

[Impaler_]

I am working on different lable packages and I've noticed that some PMS colours are drastically shifting from one file to another. I can not figure out what is different between these two files.

Below is an example of the colour shift from 1 file to another.

Any idea why this is happening? It's driving me mad!

[Impaler_]

Sorry, I sould have mentioned that the colour swatch showing is PMS 802 C. The light green is from the old file and when I paste it into a new file, it's much darker.

[Ton Frederiks]

What are the Lab values?

[Impaler_]

Hmm, the lab colours are different between the old file and new file (see below).

But why are they changing when I copy and paste?

[Impaler_]

The colour swatch is labeled Panton 802 C. Correct and both files are CMYK. Both have the same preview.

[Ton Frederiks]

The Color Type should be Book Color and the lighter one has wrong values.

[Impaler_]

The lighter one is the orginal file and the colour breakdown can not be altered. I think I've figured it out. When I copy and paste into the new file, the Pantone swatch is automatically updating to the new colour values. So in order to stop that, I need to revise the swatch name. That seems to work. It was a surprise I wasn't expecting. 

Thanks so much for the help Ton.

[Ton Frederiks]

There was a change in the early CS versions with the handling of Pantone swatches to Lab values instead of a CMYK breakdown. the new Lac values are the correct ones. Good to hear you solved it.

[Ton Frederiks]

Are they stil Spot colors in a CMYK document? What PMS color is this?

[Impaler_]

Yes, still spot. PMS 802. I copy and paste from 1 file to another. Exactly the same colour swatch.

[Impaler_]

The colour swatch showing is PMS 802 C. The light green is from the old file and when I paste it into a new file, it's much darker.

[Ton Frederiks]

Is the swatch name PANTONE 802 C ?

What are the Lab values of the swatch in both documents?