I have two pair of leggins - denim and grey. So I put a safety pin in the grey pair to distinguish.
There are various blind aids to assist in identifying clothing. So far, I have found simple techniques of marking the tag in a distinct way if needed and organization in my closet works great. I can distinguish colors that are very different from one another for example, two sweaters that one is grey and one is pink I can tell. If one is grey and one is brown -- too close.
I like these wooden pant hangers. You can put a braille description on the actual hanger rather than a label on the pants. This may not always be practical for packing purposes. Cricket and I are going on a little adventure next week and will share our packing tips. We are so excited!