pantone spot

I was trying to find a right ink for my custom spot color. I saw this very saturated blue ink in one printing supply shop the other day. And the shopkeeper told me that the code for this blue was 453. Today I saw the same ink in a local printing company and the supervisor also said that the code...

Hello Printers, I am not a printer nor in printing industry, but I am an inexperienced graphic designer. I need an advise on how to print a very deep blue color on offset printing. I am doing a catalog for an artist who uses this deep cobalt blue color. His technique of applying the color is...