Hex #307e75 or rgb(48,126,117) in RGB space is the tint of cyan. It has hue angle of 173.08 degrees, value = 49 and saturation = 62. #307e75 can be obtained by mixing 4 colors: 3 drops of yellow, 5 drops of blue, 4 drops of cyan, 4 drops of black.
Nearest safe hex - #336666. Below you can see the block with #307e75 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #307e75 to the mixer and play with it.