Color Code Placard Missing - 2008 Chevrolet Silverado HELP!!!

I have searched all over my truck to find the color code and cant find it anywhere. I was told when I bought the truck it was missing. I called the chevrolet dealership and gave them my vin and they said it was ZY1. Ive gone to all the sites to order touch up paint and that number doesnt exisit. Would someone look at my pics and if you might have the same color tell me what the name of the color is and the code. I would call it deep purple...I dont know what it is . Thanks !!