How to choose the right colors for the gradient?

Question

Design

Good afternoon.
For this query, search engines give out CSS gradient generators.
I'm interested in a more or less structured methodology of the whole process))
From scraps - I know that the use of complementary colors is not recommended.
At the very hub in the history of 8 articles on tags - gradient , and not one about the most important (for me))
Thank you!

Answer 1

Gradient - a smooth transition from one color to another with a certain frequency of change in rgb.