How to extend dark theme color palette in react tailwind css

Hello Everyone,
I have these 4 files.

I want to know How I extend the dark theme color palette that I created inside the tailwind.css file. So, I can use it inside my project.
I am using react and tailwindcss.
Please help me with this problem.

I don’t really know that much about tailwind but did you check the docs?

Thanks for your response. But I can’t able to figure out How to do that?