First of all Welcome to SCF.
Your question is valid,
Often catalogue descriptions are somewhat unclear and give a range of colors.
Your stamp is correct in color to my opinion. The 10 pfg always leans to a orange red color(more orange) the 20 pfg is more redlilac(more red)
Shown are 2 stamps from my collection which I believe give you a good idea.
Kind regards,
Johan.
