If your heart is set on a denim blue, you should check out 05 Navy. Despite its name, it’s one of two blues that seem the closest to a pair of jeans. The other is the original blue from 03. Its nickname is actually “Bluejean.”
My 2013 bleu mineral looks like denim blue. Maybe it is faded.I just shared some comparison pics of similar shades of blue closer to denim blue than blueberry (which I think is more along the lines of ink blue). There's some other really good comparison pics of various shades of blue shared by other tPFers too that might help you decide which color(s) you might want to look for. They're in the Reference forum, in the blue family thread