Always love Rios! They do fit slightly different than the usual Rios because they have a seamed waistband, closer to how the baseline waist band feels. The navy is definitely a true navy and such a great deep color!
I think these fit a little tighter than some of my other 3.75 rios but they still fit enough that I won't return. The navy colors is really nice in person and looks awesome with the liberty strappy