The one thing I would add to each swatch is where the number came from. A value read out of a palette table and a value sampled from a screenshot are not the same number, and the difference is invisible.

I ran into this today on something unrelated. A page painted #0b0d14, and macOS screencapture wrote rgb(8,13,16) into the file, because the capture lands in the display's colour space rather than sRGB. Handing that same hex to a video encoder gave a third answer, rgb(9,11,17), this time from the yuv conversion. I had to ask for #0a0f13 to get back the value the page had actually painted.

So any swatch sampled from a screenshot of a running install is drifted by a few levels, silently, and a CRT is a further step away again. One line per entry saying "documented VGA palette" or "sampled from a VM" would make this citable rather than just lovely to scroll, and it would settle the Windows 98 teal question in the sibling comment.