I am creating a logo and I am using Pantone 638U in Illustrator. I know Pantone has to be premixed but I just wanted to test print on my printer in CMYK. So I converted it to cmyk which is
C83 M0 Y10 K0. My document is in CMYK mode and I am using
View > proof colors. Here is a photo of what result I am getting. The left is on screen and the right is (approximately) the printed result.