Faber-Castell Royal Blue is a fountain pen ink of a classic royal blue color in a handy form of Standard International Short cartridges. It is not bright. Its restrained nature makes it suitable for every environment. Faber-Castell recommends it for school use.
Royal Blue is specifically designed to be a washable ink. If you would accidentally stain your clothes, you could clean them with a regular wash. The same way Royal Blue also can be easily washed from any other surfaces including paper. This property makes Faber-Castell Royal Blue to be easy to clean from the pen and to be suitable for any fountain pens including rare and vintage ones.