Hex #748b83 or rgb(116,139,131) in RGB space is the tint of greenish cian. It has hue angle of 159.13 degrees, value = 55 and saturation = 17. #748b83 can be obtained by mixing 4 colors: 1 drop of blue, 1 drop of green, 5 drops of white, 4 drops of black.
Nearest safe hex - #669999. Below you can see the block with #748b83 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #748b83 to the mixer and play with it.