View color confusions for protan defects

This option is selected from the View menu of the computer program.

A color representation of CIE color space is displayed with isochromatic confusion lines superimposed. Colors lying along the confusion lines will tend to be confused by individuals with a protan (red) defect.

For more information see Defective Color Vision

N.B. The colors displayed are only approximate and will vary according to the color capabilities of the monitor and display card.