Hex #668ca2 or rgb(102,140,162) in RGB space is the tint of bluish cian. It has hue angle of 202.00 degrees, value = 64 and saturation = 37. #668ca2 can be obtained by mixing 4 colors: 2 drops of blue, 1 drop of cyan, 4 drops of white, 3 drops of black.
Nearest safe hex - #669999. Below you can see the block with #668ca2 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #668ca2 to the mixer and play with it.