Hex #2b728e or rgb(43,114,142) in RGB space is the tint of bluish cian. It has hue angle of 196.97 degrees, value = 56 and saturation = 70. #2b728e can be obtained by mixing 4 colors: 2 drops of magenta, 5 drops of blue, 2 drops of cyan, 3 drops of green.
Nearest safe hex - #336699. Below you can see the block with #2b728e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #2b728e to the mixer and play with it.