Risograph inks are soy-based and do not conform exactly to any color standards. The listings below are approximates for reference only. Additionally, Riso inks are also slightly transparent and allow for variations in overprint and based on the color of paper they are printed on. 

2-color file open in Adobe Acrobat with Output Preview window open

For long and text heavy documents, it is easiest to design in Adobe InDesign with "Spot Color" swatches. That way your customers can send a single (multi-color) PDF for the document, without worrying about layers or export, and you the print shop can export the individual separations using Adobe Acrobat & Distiller. The generated files from this process are normal PDFs which can be used with any Riso or other machine.