How to use Saga blue theme in primeng in angular version >=18
07:37 31 Dec 2025

I am migrating a large-scale Angular application that uses PrimeNG from Angular 17 to Angular 18.

Up to Angular 17, we were using a compatible PrimeNG version where the resources folder existed inside node_modules/primeng. We imported the Saga Blue theme (theme.css) and primeng.min.css directly in the angular.json styles array, and the application worked correctly.

After upgrading to Angular 18 and the corresponding PrimeNG version, I noticed that PrimeNG has removed the resources folder, including the prebuilt themes and the primeng.min.css file. As a result, all PrimeNG components in our application are now unstyled or broken.

I followed the PrimeNG “Getting Started” documentation for the new version, but I am unclear about the following:

  • Is the Saga Blue theme still supported in PrimeNG version 18 or later?

  • If so, how can it be applied using the new theming system?

  • If not, what is the recommended migration path for applications that previously relied on Saga Blue?

What is the correct way to achieve Saga Blue–like styling in PrimeNG ≥18 when migrating from older versions?

angular primefaces primeng