If you are suggesting chromogenic prints here, I can't imagine they will look anything like cyanotypes even if the scanned original prints were contact prints using cyanotype.
Originally Posted by David William White
If a digital step is to be involved, I suggest the OP visit hybridphoto.com and investigate how to make proper digital negatives that will match the scale of the cyanotype emulsion. There are a lot of friendly people over there willing to offer good advice. Check out posts made by user mkochsch on using HSL arrays in particular. (OTOH, a film scan could also be taken into Photoshop, desaturated and then colorized blue and printed out via inkjet to a rough paper to mimic the cyanotype process better than a slick surfaced RC chromogenic print.)
If it is important to match the older cyanotypes, I say give them give them real cyanotype prints.