Hex #40a080 or rgb(64,160,128) in RGB space is the tint of greenish cian. It has hue angle of 160.00 degrees, value = 63 and saturation = 60. #40a080 can be obtained by mixing 4 colors: 2 drops of yellow, 5 drops of cyan, 1 drop of white, 4 drops of black.
Nearest safe hex - #339999. Below you can see the block with #40a080 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40a080 to the mixer and play with it.