How do I put a frame around a color box?

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I want to put a thin frame around my color box to be able to display white.

\documentclass[11pt]{article}
\usepackage{xcolor}
\newcommand\crule[3][black]{\textcolor{#1}{\rule{#2}{#3}}}
\begin{document}
    \crule[gray]{5cm}{5cm} \crule[white]{5cm}{5cm} \crule{5cm}{5cm}
\end{document}

How do I do that?

latex
1 Answers
\documentclass[11pt]{article}
\usepackage{xcolor}
\newcommand\crule[3][black]{{\setlength{\fboxsep}{0pt}\fbox{\textcolor{#1}{\rule{#2}{#3}}}}}

\begin{document}
    \crule[gray]{5cm}{5cm} \crule[white]{5cm}{5cm} \crule{5cm}{5cm}

\end{document}

or

\documentclass[11pt]{article}
\usepackage{xcolor}
\newcommand\crule[3][black]{%
  {%
    \setlength{\fboxsep}{0pt}%
    \fcolorbox{black}{#1}{\phantom{\rule{#2}{#3}}}%
  }%
}

\begin{document}
    \crule[gray]{5cm}{5cm} \crule[white]{5cm}{5cm} \crule{5cm}{5cm}
\end{document}
user_27770740
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