[ 1 ]          color    * normal *    deuteranopia    protanopia     tritanopia 
                 =====   ============   ============   ============   ============
                  C1       #000000        #000000        #000000        #000000   
                  C2       #777777        #777777        #777777        #777777   
                  C3       #ffffff        #ffffff        #ffffff        #ffffff   

                            normal      deuteranopia    protanopia     tritanopia 
                         ============   ============   ============   ============
  pairs         lowest --   36.487129 --   36.487129 --   36.487129 --   36.487129
=========           |    ------------   ------------   ------------   ------------
C2 vs. C3 |  36.487129   #  36.487129   #  36.487129   #  36.487129   #  36.487129
C1 vs. C2 |  36.551420   *  36.551420   *  36.551420   *  36.551420   *  36.551420
C1 vs. C3 | 100.000001   * 100.000001   * 100.000001   * 100.000001   * 100.000001