If there is a Pantone color in your document, it would appear as a separate swatch (the ones with the small triangle in the top right). If not, it is listed as a process color and you need to reverse-find it based on the Pantone mixing guide. You can also let the color "snap" to the next pantone color with a color book loaded by clicking on the mixer swatch on the color panel or the Recolor Artwork panel it may just not match the exact color you want.
Sorry I don't understandwhere is "Recolor Artwork panel" ...
Thx for reply..
here you find it under the Edit menu you select all your art or the piece of art where you have the color you want to know then open the recolor art panel
at the top is the new color group which looks like a folder with a plus that will make ne group which when expenaded will give yu all the colors including the spot colors.
If you want to know the nearest spot color match of process color the slect color books fro the drop down near the bottom of the panel in the center that looks like the swatches, little squares.