PixelSearch shadr variation question

I am using PixelSearch with color of 0xD89840 and range 15 and get back color AE7134 

also color D8A040 range 15 color received BC8F45

also color FFFFFF range 0 color received 876455

I am running W7 64bit and version 3.3.8.1

It looks to me like the range process is not working very well. 

If search was for FFFFFF and range was 0 ie exact color required why did I get a color found and returned that was not FFFFFF?

code snipit is:

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 $coord = PixelSearch($homex-23,$homey,$homex+19,$homey+15,0xFFFFFF,0,1)
 if not @error Then
  _DebugOut("CheckDamage6: x=" & $coord[0] & ",y=" & $coord[1] & ",pixel=" & Hex(PixelgetColor($coord[0],$coord[1]),6))
  $ReceivingDamage = True
 EndIf
 

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