Man pages matching name convert::color::xterm in section 3pm:

Convert::Color::XTerm.3pm.en	debian 10 / libconvert-color-xterm-perl
Convert::Color::XTerm.3pm.en	debian 11 / libconvert-color-xterm-perl
Convert::Color::XTerm.3pm.en	debian 12 / libconvert-color-xterm-perl