Hex #40d655 or rgb(64,214,85) in RGB space is the tint of bluish green. It has hue angle of 128.40 degrees, value = 84 and saturation = 70. #40d655 can be obtained by mixing 3 colors: 3 drops of yellow, 4 drops of cyan, 5 drops of green.
Nearest safe hex - #33cc66. Below you can see the block with #40d655 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40d655 to the mixer and play with it.