Hex #407c55 or rgb(64,124,85) in RGB space is the tint of bluish green. It has hue angle of 141.00 degrees, value = 49 and saturation = 48. #407c55 can be obtained by mixing 4 colors: 3 drops of red, 4 drops of cyan, 3 drops of green, 2 drops of black.
Nearest safe hex - #336666. Below you can see the block with #407c55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #407c55 to the mixer and play with it.