The carmine lake variety is a very deep color. It's extremely unlikely the image posted above is a 634b IMO.
FWIW, I'm getting ready to offer this 599b pair, so scanned it with a "normal" 599 for comparison.
In case you're wondering, I do color-calibrate my entire system, so if your monitor is color-calibrated, the shade should be pretty true. ...and as you might imagine, the range of carmine-lake 599b shades is nearly identical to the range of 634b shades, so I thought it would be relevant to this thread.