Hex #378380 or rgb(55,131,128) in RGB space is the tint of cyan. It has hue angle of 177.63 degrees, value = 51 and saturation = 58. #378380 can be obtained by mixing 4 colors: 3 drops of magenta, 3 drops of blue, 3 drops of cyan, 5 drops of green.
Nearest safe hex - #339999. Below you can see the block with #378380 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #378380 to the mixer and play with it.