Hex #407f55 or rgb(64,127,85) in RGB space is the tint of bluish green. It has hue angle of 140.00 degrees, value = 50 and saturation = 50. #407f55 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of blue, 2 drops of cyan, 3 drops of black.
Nearest safe hex - #336666. Below you can see the block with #407f55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #407f55 to the mixer and play with it.