I know that the SCF has multiple posts concerning the inability to determine the exact color of a stamp because of the variations in the scanner. But I thought that I would provide an example.
The two (2) following scans are of the same Canadian perfin stamp, using the same PC software and settings but different scanners (Canon and HP).


This is Scott #287, which in one scan looks more orange (Scott 306) than its true red.
- stamporator -