包 xcolor 錯誤:未定義顏色“lightblue2”

包 xcolor 錯誤:未定義顏色“lightblue2”

嘗試使用 pdflatex 編譯 TeX 文件時出現此錯誤:

包 xcolor 錯誤:未定義顏色“lightblue2”

這是我的文件:

\documentclass{article}
\usepackage[x11names, rgb]{xcolor}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usetikzlibrary{snakes,arrows,shapes}
\usepackage{amsmath}
%
%

%

%

\begin{document}
\pagestyle{empty}
%
%
%

\enlargethispage{100cm}
% Start of code
\begin{tikzpicture}[>=latex',line join=bevel,]
%%
\node (Wollongong) at (487bp,594bp) [draw=lightblue2,fill=lightblue2,ellipse] {Wollongong};
  \node (PDP-11 Sys V) at (884bp,306bp) [draw=lightblue2,fill=lightblue2,ellipse] {PDP-11 Sys V};
  \node (Interdata) at (258bp,594bp) [draw=lightblue2,fill=lightblue2,ellipse] {Interdata};
  \node (2*8 BSD) at (221bp,162bp) [draw=lightblue2,fill=lightblue2,ellipse] {2.8 BSD};
% CODE REMOVED TO SAVE SPACE
%
\end{tikzpicture}
% End of code

%
\end{document}
%

答案1

你正在尋找顏色LightBlue2,而不是lightblue2

在內部,所有顏色都表示為宏,並且宏區分大小寫。也就是說,\latex不同於\Latexand\LaTeX\LATEXand...實際上顏色X儲存在巨集中\\color@X

在此輸入影像描述

\documentclass{article}
\usepackage[x11names]{xcolor}
\begin{document}
\textcolor{LightBlue2}{something}

\makeatletter
\ttfamily\verb|\\color@LightBlue2|:
\expandafter\expandafter\expandafter\strip@prefix\expandafter\meaning\csname \string\color@LightBlue2\endcsname
\end{document}

答案2

xcolor有關正確的顏色名稱 (x11names),請參閱文件第 39 頁。您將透過運行獲得文檔texdoc xcolor

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