# Color changes cell height in tabular

The following code shows that a \color{red} command increases the height of a tabular cell. I want to use a switch, not a command as \textcolor{red}{text}.

\documentclass{article}

\usepackage{xcolor}
\usepackage{float}

\begin{document}

\begin{table}[H]
\begin{tabular}{*{2}{p{0.45\textwidth}}}
\hline
\color{red} header &
header \tabularnewline
\hline
%
content  & content \tabularnewline
content  & content \tabularnewline
content  & content \tabularnewline
\hline
\end{tabular}
\end{table}
\end{document}


How can I work around this problem?

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## 1 Answer

The cell height will be correct if you insert \leavevmode before \color for changing into horizontal mode. \textcolor does the same internally, it calls \leavevmode and then \color, additionally it does grouping. So use this as a switch:

\leavevmode\color{red} header &


If necessary in other places (maybe in moving arguments), consider protecting \leavevmode.

\protect\leavevmode\color{red}

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The \color command doesn't switch to LR-mode, since it's useful also between paragraphs; however in a p column it defeats the boxing mechanism because when the paragraph starts, as soon as TeX scans the h in "header", the vertical list is not empty. Issuing \leavevmode cures the problem by starting a paragraph itself. – egreg Oct 14 '11 at 10:22
@egreg: thanks for the additional explanation! – Stefan Kottwitz Oct 14 '11 at 10:28