Hex #40734e or rgb(64,115,78) in RGB space is the tint of bluish green. It has hue angle of 136.47 degrees, value = 45 and saturation = 44. #40734e can be obtained by mixing 4 colors: 1 drop of blue, 3 drops of green, 3 drops of white, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #40734e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40734e to the mixer and play with it.