is there an easy way to learn hexadecimal color conversion? let's say i want green? how to i convert it to hexadecimal?

If you want green, you can so this: #00ff00.

The first two numbers represent how much red is in the color. Remember: In the 10th base (the one you and I use), we use numbers 0 through 9 (0123456789). But, in the hexadecimal base, you use numbers 0 through f (01234566789abcdef). As you see, a is worth one number more than 9, the same as 8 is worth one number more than 9.

The second two numbers represents how much green you want to use, and the last two digits represent how much blue.

Remember, this isn't painting, it is colors mixing on a screen, so green and blue for some reason mix up to be yellow! I know its weird

In my color value green, I use no red, full green, and no blue.

You can also use an online color picker.

I hope this helps

Happy coding!

~Alex

ADDED EXTENSION:

Sometimes, CSS also provides values such as green so you don't need to use hexadecimal values

Example:

h1 {
  color: green;
  background-color: orange;
}