Hex #377b80 or rgb(55,123,128) in RGB space is the tint of cyan. It has hue angle of 184.11 degrees, value = 50 and saturation = 57. #377b80 can be obtained by mixing 4 colors: 3 drops of magenta, 5 drops of cyan, 3 drops of green, 3 drops of black.
Nearest safe hex - #336699. Below you can see the block with #377b80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #377b80 to the mixer and play with it.