Hex #40b155 or rgb(64,177,85) in RGB space is the tint of bluish green. It has hue angle of 131.15 degrees, value = 69 and saturation = 64. #40b155 can be obtained by mixing 4 colors: 3 drops of yellow, 3 drops of blue, 2 drops of cyan, 4 drops of green.
Nearest safe hex - #339966. Below you can see the block with #40b155 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40b155 to the mixer and play with it.