Incorrect in practice for Complementary colors page

So i’m going through this page

and the lesson is all about complementary colors, but then it has you put blue next to yellow, implying that they are complementary colors.
But they aren’t.
Blue’s Complementary color is Orange
Yellow’s Complement is Purple.

I’m sure it was just a mistake, but I figured we might want to fix it.

Bugs should always be reported as GitHub Issues. Whenever reporting a bug, please check first that there isn’t already an issue for it and provide as much detail as possible.

My bad. I just did the issue. I’d be happy to fix it if no one else wants to.