Brazilian full-back Bernardo joined the Seagulls from Germany's RB Leipzig on a four-year-deal for an undisclosed fee, believed to be $7.68 million, and keeper Keto, 20, arrived on a free transfer from Arsenal.
The duo featured on Saturday as Albion played out a 1-1 draw in a friendly with FC St Gallen, and Hughton was happy with the pair's performances.
"I got to have a look at Bernardo during the first half - we knew he's played mostly as a left-back, but we know he's versatile and today we saw him on the opposite side of the defence," he told the club's official website.
"It was a good introduction for him, he perhaps took a little while to get into the rhythm but that's normal. He's a young player who'll get used to our system and way of playing because he's been used to something different at his previous club, but the most important thing is he's trained all week and he's got through the game today as well.
"Hugo [Keto] has had a really good week with us and he's had a good introduction - we made the decision to play him and I thought he did well."