Hex #377b68 or rgb(55,123,104) in RGB space is the tint of greenish cian. It has hue angle of 163.24 degrees, value = 48 and saturation = 55. #377b68 can be obtained by mixing 4 colors: 3 drops of red, 4 drops of blue, 3 drops of cyan, 4 drops of green.
Nearest safe hex - #336666. Below you can see the block with #377b68 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #377b68 to the mixer and play with it.