Hex #407180 or rgb(64,113,128) in RGB space is the tint of bluish cian. It has hue angle of 194.06 degrees, value = 50 and saturation = 50. #407180 can be obtained by mixing 2 colors: 1 drop of yellow, 3 drops of blue.
Nearest safe hex - #336699. Below you can see the block with #407180 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #407180 to the mixer and play with it.