# How to write these two symbols in LaTeX

How to write these two symbols in LaTeX

I know the Latex symbols are $\Delta$ but how to shade the Delta in Latex? Please help.

\documentclass{article}
\usepackage{amssymb}
\usepackage{xcolor}

\begin{document}
\begin{enumerate}
\item $$\color{red}\blacktriangle$$
\item $$\color{red}\blacktriangledown$$
\end{enumerate}
\end{document}


That would give you

• Thanks a lot, great solution May 14, 2021 at 6:12
• This would look great on an elevator. May 14, 2021 at 15:24

Here is a solution for LuaLaTeX or XeLaTeX:

\documentclass{article}
\tracinglostchars=3
\usepackage[svgnames]{xcolor}
\usepackage{newcomputermodern}

\newcommand\redtriangleup{\textcolor{Red}{\bigblacktriangleup}}
\newcommand\redtriangledown{\textcolor{Red}{\bigblacktriangledown}}

\begin{document}
$\redtriangleup\redtriangledown$
\end{document}


In PDFTeX, load \usepackage{stix} or \usepackage{stix2} instead of \usepackage{newcomputermodern}.

ETA: You can replace \bigblacktriangleup with \blacktriangleup and \bigblacktriangledown with \blacktriangledown as in needle’s answer, while using the same approach. Many more packages support these commands.