To make it clearer for those who might be confused by tables....
In addition to Bill’s and Oscar’s posts,
let me try to develop an example:
… by first creating a most saturated Yellow in CIE RGB:
RGB = 255, 255, 0
HSB = 60, 100, 100
… now, referring to the CIE color matching functions
(see page 4: http://www.fho-emden.de/~hoffmann/ciexyz29082000.pdf)
it can be easily seen that the r and g weighting curves meet each other at about 570 nm.
… so IF my humble monitor would be able to show all CIE RGB colors
based on the respective RGB primaries of 700/546.1/435.8 nm
(in the sense of a thought experiment)
above created yellow would look right the same
as a spectrally pure yellow of 570 nm.
At least this should be valid for the standard human observer; neither for birds nor for people with fancy perception.