I mean... A lot of IDEs will actually pop up a color picker for you nowadays, so it's really not the best counter or supporting argument.

Also, CSS has string names for common colors.
And also, you can use RGB(x, y, z)... All it takes is learning a bit about color theory.
Hex works in the same way kind of. Its a base 16 code consisting of 3 pairs of numbers
#00 99 FF
---r--g--b^

so if I write #0000FF, that means 0 red, 0 green and 16 blue(because F is 16 in hex), meaning there is only blue in the mix, so of course the color will be blue.

if you type #FF00FF, you now mixed in an equal amount of red, which gives purple.

If you are confused about what base 16 means, you should look it up :) Its interesting, and in learning it, you will probably also learn about Binary numbers which are base 2.
Base two means, that the number scale only goes up twice, before moving on to the next "level"..

The normal number scale, aka 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, is base 10, because it goes up 10 ciphers before "resetting" and reusing its own symbols again to count further.
In this instance, the number 10 consists of the next smallest number after the starting one which is 0... and then you add the smallest possible number after that, so you get 1 concatenated with 0.

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I mean... A lot of IDEs will actually pop up a color picker for you nowadays, so it's really not the best counter or supporting argument.

Also, CSS has string names for common colors.

And also, you can use RGB(x, y, z)... All it takes is learning a bit about color theory.

Hex works in the same way kind of. Its a base 16 code consisting of 3 pairs of numbers

#00 99 FF

---r--g--b^

so if I write #0000FF, that means 0 red, 0 green and 16 blue(because F is 16 in hex), meaning there is only blue in the mix, so of course the color will be blue.

if you type #FF00FF, you now mixed in an equal amount of red, which gives purple.

If you are confused about what base 16 means, you should look it up :) Its interesting, and in learning it, you will probably also learn about Binary numbers which are base 2.

Base two means, that the number scale only goes up twice, before moving on to the next "level"..

The normal number scale, aka 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, is base 10, because it goes up 10 ciphers before "resetting" and reusing its own symbols again to count further.

In this instance, the number 10 consists of the next smallest number after the starting one which is 0... and then you add the smallest possible number after that, so you get 1 concatenated with 0.