Unified modeling language is a semi-formal and standard language for describing software architecture easily used to meet requirement functionality and to describe behavioral and structural specifications in software engineering. However, since UML is not a formal model, direct evaluation of software architecture is not possible, directly. On the other hand, evaluating software architecture in initial phases helps us consider more requirements and it reduces designing expenditures. Therefore, converting pragmatic model to formal model is necessary for software architecture evaluation. For evaluating software architecture and making an executive model, using color Petri net are useful because of simplicity, high capability and enhancing theoretical mathematics. Using language variables and fuzzy logic causes a higher accuracy in computations associated with efficiency evaluation. In this paper, we present fuzzy logic and reaction analysis before implementation, which can improve efficiency of design problems.