[ 1 ]          color    * normal *    deuteranopia    protanopia     tritanopia 
                 =====   ============   ============   ============   ============
                  C1       #000000        #000000        #000000        #000000   
                  C2       #434343        #434343        #434343        #434343   
                  C3       #777777        #777777        #777777        #777777   
                  C4       #afafaf        #afafaf        #afafaf        #afafaf   
                  C5       #ffffff        #ffffff        #ffffff        #ffffff   

                            normal      deuteranopia    protanopia     tritanopia 
                         ============   ============   ============   ============
  pairs         lowest --   18.537831 --   18.537831 --   18.537831 --   18.537831
=========           |    ------------   ------------   ------------   ------------
C1 vs. C2 |  18.537831   #  18.537831   #  18.537831   #  18.537831   #  18.537831
C4 vs. C5 |  18.627199   *  18.627199   *  18.627199   *  18.627199   *  18.627199
C3 vs. C4 |  18.654241   *  18.654241   *  18.654241   *  18.654241   *  18.654241
C2 vs. C3 |  18.812049   *  18.812049   *  18.812049   *  18.812049   *  18.812049
C3 vs. C5 |  36.487129   *  36.487129   *  36.487129   *  36.487129   *  36.487129
C1 vs. C3 |  36.551420   *  36.551420   *  36.551420   *  36.551420   *  36.551420
C2 vs. C4 |  43.051561   *  43.051561   *  43.051561   *  43.051561   *  43.051561
C1 vs. C4 |  59.346913   *  59.346913   *  59.346913   *  59.346913   *  59.346913
C2 vs. C5 |  59.492888   *  59.492888   *  59.492888   *  59.492888   *  59.492888
C1 vs. C5 | 100.000001   * 100.000001   * 100.000001   * 100.000001   * 100.000001