Dynamically change color to lighter or darker by percentage CSS (Javascript)

Question

We have a big application on the site and we have a few links which are, let\'s say blue color like the blue links on this site. Now I want to make some other links, but wit

Answer 1

If you want darker color, you can use rgba black with low opacity:

rgba(0,0,0,0.3)

For lighter use white:

rgba(255,255,255,0.3).