Thanks so much for the answers!
I switched the View Transform, under Color Management, to Standard and that got it close enough.
I agree that I don’t need to get the exact values in a tutorial, but alarm bells were ringing when I was using exact values and the results weren’t similar. If I set Blender up improperly, then I would like to make sure to get that fixed before I end up learning the wrong way of doing things.
Thanks again!