\documentclass{article} \usepackage{color} \usepackage[tcvn]{vietnam} %\usepackage{times} \begin{document} \noindent \colorbox{blue}{\color{white}{\huge\MakeUppercase{tiÕng viÖt}}} \colorbox{blue}{\color{white}{\huge\MakeUppercase{tieng viet}}}\\ \colorbox{blue}{\color{white}{\textsf{\huge\MakeUppercase{tiÕng viÖt}}}} \colorbox{blue}{\color{white}{\textsf{\huge\MakeUppercase{tieng viet}}}} \end{document}