# Lighter midrule

I have a table that looks like

\documentclass{article}

\usepackage{booktabs}

\begin{document}
\begin{tabular}{cc}
\toprule
A   &   B   \\
\midrule
Q   &   M   \\
W   &   N   \\
E   &   B   \\
R   &   V   \\
T   &   C   \\

Y   &   X   \\
U   &   L   \\
I   &   K   \\
O   &   J   \\
P   &   H   \\

A   &   5   \\
S   &   7   \\
D   &   8   \\
F   &   2   \\
G   &   4   \\
\bottomrule
\end{tabular}
\end{document}


The code has five-line blocks, which can be made distinguishable in the output with \midrule, but I consider that to be too distracting, as would be to number each row. I'd like to have a lighter rule, with tweakable space above and below it. I added some grey lines with Paint to a \midrule-less table.

Forcing a color onto \midrule with either \textcolor or \color produces errors, while using \rule allows coloring but requires making measurements to get the correct width.

• \specialrule{width}{abovespace}{belowspace}. – Johannes_B Jun 28 '16 at 20:39

## 2 Answers

You can use \arrayrulecolor{<colour>} from colortbl to change the colour, and \specialrule{<width>}{<above>}{<below>} to set a rule of specific dimensions:

\documentclass{article}

\usepackage[table]{xcolor}
\usepackage{booktabs}

\begin{document}

\begin{tabular}{ c c c }
\toprule
A   &   B   \\
\midrule
Q   &   M   \\
W   &   N   \\
E   &   B   \\
R   &   V   \\
T   &   C   \\
\arrayrulecolor{black!30}\midrule
Y   &   X   \\
U   &   L   \\
I   &   K   \\
O   &   J   \\
P   &   H   \\
\arrayrulecolor{black!50}\specialrule{3pt}{2\jot}{1pc}
A   &   5   \\
S   &   7   \\
D   &   8   \\
F   &   2   \\
G   &   4   \\
\arrayrulecolor{black}\bottomrule
\end{tabular}

\end{document}


Note that the rule colour change is global, so you'll have to reset to black if it's been changed before.

• From this answer, I defined \newcommand{\greyrule}{\arrayrulecolor{black!30}\midrule\arrayrulecolor{black}} so that I can easily use \greyrule within tables. – Micah Smith Feb 2 at 23:16

For colours you have to use \arrayrulecolor{…} at the beginning of a row. For the thickness of \midrules, you can change the value of\lightrulewidth or change the thickness of a specific rule with the optional argument. Demo:

\documentclass{article}

\usepackage{booktabs}
\usepackage[x11names, table]{xcolor}
\setlength\lightrulewidth{0.3pt}
\begin{document}

\begin{tabular}{ccc}
\toprule
A & B \\
\arrayrulecolor{Grey0!60!RoyalBlue3}\midrule[0.5pt]
Q & M \\
W & N \\
E & B \\
R & V \\
T & C \\
\arrayrulecolor{OrangeRed1! 50}\midrule
Y & X \\
U & L \\
I & K \\
O & J \\
P & H \\
\midrule
A & 5 \\
S & 7 \\
D & 8 \\
F & 2 \\
G & 4 \\
\arrayrulecolor{black}\bottomrule
\end{tabular}

\end{document}
`