Jan,
I have a Sherwin Williams color match device that will tell you exactly what color it is.
I also have the master set of color swatches that you can use to make sure its a full match.
As far as sheen, you should be able to tell by eye if it is matte, satin, or gloss.
Let me know when you want to borrow it.
You'll have to come here though, my van is in the shop for another few days.