Problem with transition color in a gradiant

What value of Pantone are you using, and what is your output intent? There are pantone values for Coated, Uncoated, Process (CMYK, as in the Bridge Coated/Uncoated). Note that Pantone colours may differ to how they are displayed, beacuse Pantone is and "Ink" and not a "Colour". How a Pantone colour behaves on a blend is hard to simulate because it depends on the ink, substrate and print process. Contact the printer that will work with this it is the only way. They may need to do tests because the possible variations are too many and they may not have tried exactly what you want to do.

(For best simulation of spot colours use CMYK Colour mode, because otherwise you cannot proof colours. And define your spot colurs as LAB. View the result using simulate proof colours on a calibrated monitor, but be aware that some Pantone colours are outside the Gamut of a monitor)
 

Can you show us an example?

Does the purple show on screen, in a color print?

Do you use them as spot colors or convert them to CMYK?

Did you use Overprint preview?

Can you show us an example? Are these 2 diffrent Pantone colors you are using?

Hello, I have a problem in Illustrator where I have a gradient of a light and a dark shade of blue. Both shades do not look very reddish. But the color that emerges in the gradiant is totally purple. Due to my printing process, I have to specify both shades as pantone value. What can I influence the color in the gradient? Thank you!