how to set label and line the same color in gnuplot

Question

Very simple stuff. I want a function, say function f, to be plotted with a particular color. I also want a piece of label saying \"function f color\" which is also displayed

Answer 1

The answer by @holygeek works fine. Coming from python, I find that it is often nice to be a little more explicit.

set style line 1 lw 1 lc rgb "red"
set label "AC" at 0, 70 tc rgb "red"

Note that the set of color names recognized by your gnuplot is system dependent (see show colornames for a complete list). To achieve complete system independence, you can use the #RRGGBB version. e.g. red is '#ff0000, green is #00ff00 and blue is #0000ff. of course, you can make up all sorts of interesting colors (again, see show colornames for a list of pre-defined colors and their equivalent #.....)

for more info, also see help colorspec