For a long time, using gradients was the biggest no-no in design. Designers tended to avoid gradients because they created a strong impression of design from the 90s.

But that is no longer the case. If you open Dribbble or Behance right now, there is a strong chance you will see dozens of designs that use gradients. The gradients designers use are loud and full of color.

More at
https://gradienthunt.com/
https://uigradients.com/