Hex #2b756b or rgb(43,117,107) in RGB space is the tint of greenish cian. It has hue angle of 171.89 degrees, value = 46 and saturation = 63. #2b756b can be obtained by mixing 4 colors: 2 drops of yellow, 3 drops of blue, 3 drops of cyan, 4 drops of black.
Nearest safe hex - #336666. Below you can see the block with #2b756b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #2b756b to the mixer and play with it.