Hex #40d860 or rgb(64,216,96) in RGB space is the tint of bluish green. It has hue angle of 132.63 degrees, value = 85 and saturation = 70. #40d860 can be obtained by mixing 3 colors: 2 drops of yellow, 3 drops of cyan, 3 drops of green.
Nearest safe hex - #33cc66. Below you can see the block with #40d860 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40d860 to the mixer and play with it.