Accessible TeX colors

Summary: Instead of using \textcolor{red} , green , and blue , use purple , teal , and blue . Want more colors? Use \usepackage{ninecolors} . Which default LaTeX colors are readable? The set of LaTeX default colors are chosen primarily to be a mathematically clean subsample of the RGB space. For example, red, green, and blue are just #FF0000 , #00FF00 , and #0000FF —the codes look nice, but the…