Hex #409e9c or rgb(64,158,156) in RGB space is the tint of cyan. It has hue angle of 178.72 degrees, value = 62 and saturation = 59. #409e9c can be obtained by mixing 4 colors: 5 drops of blue, 1 drop of cyan, 3 drops of green, 3 drops of white.
Nearest safe hex - #339999. Below you can see the block with #409e9c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #409e9c to the mixer and play with it.