Hex #40746b or rgb(64,116,107) in RGB space is the tint of greenish cian. It has hue angle of 169.62 degrees, value = 45 and saturation = 45. #40746b can be obtained by mixing 4 colors: 4 drops of magenta, 4 drops of cyan, 5 drops of green, 3 drops of black.
Nearest safe hex - #336666. Below you can see the block with #40746b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40746b to the mixer and play with it.