Hex #378f86 or rgb(55,143,134) in RGB space is the tint of cyan. It has hue angle of 173.86 degrees, value = 56 and saturation = 62. #378f86 can be obtained by mixing 4 colors: 3 drops of magenta, 2 drops of blue, 4 drops of cyan, 5 drops of green.
Nearest safe hex - #339999. Below you can see the block with #378f86 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #378f86 to the mixer and play with it.