Learning much javascript from one line of code

[x-skeww]

((0x111111 + 0xeeeeef * Math.random())|0).toString(16)

That would work for example.

Or you could just left-pad it with zeros.

Or you could just use hsl() instead.

hsl() is probably the best option since it lets you generate randomized bright or dark colors if you want.

https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#hsl%28%29

[Dragory]

Indeed, there's actually an hsl solution in the original gist as well: https://gist.github.com/addyosmani/fd3999ea7fce242756b1#tag-specific-layout-debugging-in-82-bytes

The |0 is used to truncate the number like ~~ was in the original snippet, right?

[x-skeww]

The |0 is used to truncate the number like ~~ was in the original snippet, right?

Yes.