> These are the colors our eyes see.

No, they aren't.

The three cones in your eyes respond most strongly to deep blue-violet, green, and yellow-green. But they see a distribution of colors around those peaks.

What you're getting at here is the idea that color is about tristimulus values, not the spectral power distribution. And that's true, at least under the assumption of humans with normal color vision.

But red, green, and blue light are not the tristimulus values, and don't cover all possible stimulus values that can be produced by a spectral distribution.