Hex #305770 or rgb(48,87,112) in RGB space is the tint of blue. It has hue angle of 203.44 degrees, value = 44 and saturation = 57. #305770 can be obtained by mixing 4 colors: 3 drops of red, 3 drops of blue, 5 drops of cyan, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #305770 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #305770 to the mixer and play with it.