Turquoise and Blue were 2 different engine colors used on 440's. The blue paint number on the chart is the right color for your 440 for 1972/1973.
The following chart shows the paint for 1971 and previous 440's.
1970 and 1971 440's were painted different colors. Chrysler wasn't too strict on engine colors.
The following chart shows the paint for 1971 and previous 440's.
1971 | 440 V8 | All | Blue or Turq | Mopar Paint P4349217 or P4120752 (not sure) **** |
1971 | 440 V8 High Perf/Police | High Perf | H-Orange | Mopar Paint P4349216 |
1970 and 1971 440's were painted different colors. Chrysler wasn't too strict on engine colors.