Hex #40b66b or rgb(64,182,107) in RGB space is the tint of bluish green. It has hue angle of 141.86 degrees, value = 71 and saturation = 65. #40b66b can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of blue, 1 drop of cyan, 1 drop of green.
Nearest safe hex - #33cc66. Below you can see the block with #40b66b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40b66b to the mixer and play with it.