Goalkeeper Emiliano Martinez was the hero as Argentina defeated Colombia on penalties to set up a dream Copa America final against Brazil on Tuesday.

Argentina stopper Martinez saved three penalties in the shoot-out after a bruising 1-1 draw in Brasilia. 

Hosts Brazil beat Peru 1-0 in Monday's first semi-final meaning their star forward Neymar will line up against Lionel Messi's Argentina on Saturday.

Two years ago a Brazil team missing the injured Neymar knocked out Argentina in the semi-finals before winning their ninth Copa title on home soil.

For Messi, 34, time is running out to win a first major international title with his national team, having previously lost in three Copa finals and the 2014 World Cup final.

For once he wasn't his country's main hero, although he did create the opening goal for Lautaro Martinez on seven minutes, before Luis Diaz equalized just after the hour mark.

In the shoot-out, goalkeeper Martinez three times dived to his left to save penalties from center-backs Davinson Sanchez and Yerry Mina, as well as midfielder Edwin Cardona.

And although Rodrigo De Paul skied his penalty for Argentina, Messi, who finished with blood seeping visibly from his left ankle, was among the scorers to give them a 3-2 victory on spot-kicks.