Hex #40837a or rgb(64,131,122) in RGB space is the tint of greenish cian. It has hue angle of 171.94 degrees, value = 51 and saturation = 51. #40837a can be obtained by mixing 4 colors: 4 drops of magenta, 5 drops of cyan, 5 drops of green, 2 drops of black.
Nearest safe hex - #339966. Below you can see the block with #40837a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40837a to the mixer and play with it.