Hex #668ab0 or rgb(102,138,176) in RGB space is the tint of blue. It has hue angle of 210.81 degrees, value = 69 and saturation = 42. #668ab0 can be obtained by mixing 4 colors: 3 drops of red, 5 drops of blue, 4 drops of cyan, 3 drops of white.
Nearest safe hex - #669999. Below you can see the block with #668ab0 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #668ab0 to the mixer and play with it.