Hi Essex
I used to work for a company that made flooring and parquet. They offered a colour match service, but was very expensive and really for commercial applications. Old parquet is normally either, red oak, pitch pine, or sapele. It's not sapele, and don't think it's red oak, so most likely to be pitch pine. If you're looking to match it don't look at the colour now, sand a sample piece back to look what the base material is like, so when you add stain/finish it will then match. Would suggest you look for an online floor reclamation specialist, and see what they have available, likely it was fairly standard back in the day. Also, slightly pedantic, measurements for something old like this would have been imperial, so just double check metric size is right. Only other option would be to find a restorer/reclaimer locally. Plenty of it about so you shouldn't have too much difficulty finding some.