Canon MX450 Series Online Manual page 741

Refer to "Image Settings" for your model from Home of the Online Manual for details.
Check 7: If the color tone of images is different from the original
document, take the following measures and scan again.
• On the Advanced Mode tab of ScanGear, set Image Adjustment in Image Settings to None.
Refer to "Image Settings" for your model from Home of the Online Manual for details.
• On the Color Settings tab in the Preferences dialog box of ScanGear, set Color Matching.
Refer to "Color Settings Tab" for your model from Home of the Online Manual for details.