\documentclass{article} \usepackage{kotex} \usepackage{xparse} \usepackage{xcolor} \usepackage{jiwonlipsum} \NewDocumentCommand\txtcol{lm}{\textcolor{#2}{#1}} \begin{document} \txtcol \jiwon[1]{blue!30} \txtcol \jiwon[2]{blue!50} \txtcol \jiwon[3-4]{blue!70} \end{document}