Hex #40c255 or rgb(64,194,85) in RGB space is the tint of bluish green. It has hue angle of 129.69 degrees, value = 76 and saturation = 67. #40c255 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of red, 4 drops of cyan, 5 drops of green.
Nearest safe hex - #33cc66. Below you can see the block with #40c255 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40c255 to the mixer and play with it.