A writing system is a way of writing a language. The research in this field has concentrated on alphabetic writing systems. Also, the written language has been considered as a secondary system of spoken language. However, the writing system(also called graphemics) has recently been regarded as a linguistic system in its own right. Graphemics deals with properties which are not found in spoken language and a structural description of how sound system and writing system are related to each other. Graphemics includes all the ways which write a particular language. On the other hand, orthography is mainly concerned with the normative writing system. That is to say, an orthography is established as a prescriptive rule at a certain time among the feasible writing systems. Within the context of modern times, there was a great variety in the language forms; any dialectical, stylistic and ``free`` variations in the Age of Information. These are all the main objects of Korean graphemics. Among them, one of the forms could be established as a Korean orthography within the limits of possibility. The purpose of this paper is to investigate the correlation between Korean graphemics and Korean orthography.