Colombia coach Jose Pekerman accepted his team were outplayed by Argentina, who advanced into the semi-finals of the Copa America via a penalty shoot-out.
Colombia were eliminated from the competition when Carlos Tevez's penalty hit the back of the net, as the Argentines won 5-4 after the 0-0 draw over 90 minutes.
And, the Colombia boss hailed his side for showing character, despite Argentina's dominance in the match, adding Tata Martino's team were the better side.
"Argentina played a great game and we had many difficulties in the first half," Pekerman told a news conference.
"We lost the ball a lot, we tried to use some width but failed, and we tried to put things right early on but just couldn't get up with the pace of the game.
"We improved in the second half and created some chances, but Argentina were much better. We have to take the result on the chin, but we deeply regret going out of the competition.
"This is a very tough group who always fight.
"The players prepared well and strove to be fit, but today we just came up against a team of great strength who were not going to let us off the hook.
"It was a good experience for Colombia," he added.
"We are a growing team with lots of good parts to our game, but we thank all those who always believed in us and we must keep working to improve."