Two penalties from Gogledd scrum half Alex Schwarz kept the home side in touch on a day when they produced their most complete performance in two seasons.
However, despite failing in their bid to break their duck for the season, their performance was far improved against a Scarlets’ side who turned around an early 3-0 deficit to win the game 22-6.
Aled Davies, Rheon James, Kirby Myhill and Llyr Morris crossed the whitewash for the visitors with James Morris adding a conversion for good measure.
Gogledd Cymru team manager Will Morecombe said; “Before the game and having lost every one of our games since entering the competition, the coaches said to the players to forget the result and concentrate on the performance.
“We did that and to be honest although we lost, I think it was a significant step in the right direction.”