Most modern terminals support true color now [1]. My current favourite is Alacritty because of the combination of speed (hardware acceleration), simplicity (no menus or dialogs), and configurability (including key bindings) with a simple plain-text file that can be kept in version control [2].

[1] https://gist.github.com/XVilka/8346728 [2] https://github.com/adambyrtek/dotfiles