Hex #40c69f or rgb(64,198,159) in RGB space is the tint of greenish cian. It has hue angle of 162.54 degrees, value = 78 and saturation = 68. #40c69f can be obtained by mixing 4 colors: 3 drops of cyan, 2 drops of green, 2 drops of white, 1 drop of black.
Nearest safe hex - #33cc99. Below you can see the block with #40c69f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40c69f to the mixer and play with it.