Hex #40c755 or rgb(64,199,85) in RGB space is the tint of bluish green. It has hue angle of 129.33 degrees, value = 78 and saturation = 68. #40c755 can be obtained by mixing 4 colors: 3 drops of yellow, 4 drops of cyan, 4 drops of green, 1 drop of black.
Nearest safe hex - #33cc66. Below you can see the block with #40c755 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40c755 to the mixer and play with it.