Hex #40bf5c or rgb(64,191,92) in RGB space is the tint of bluish green. It has hue angle of 133.23 degrees, value = 75 and saturation = 66. #40bf5c can be obtained by mixing 4 colors: 3 drops of yellow, 2 drops of blue, 3 drops of cyan, 4 drops of green.
Nearest safe hex - #33cc66. Below you can see the block with #40bf5c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40bf5c to the mixer and play with it.