Hex #668da2 or rgb(102,141,162) in RGB space is the tint of bluish cian. It has hue angle of 201.00 degrees, value = 64 and saturation = 37. #668da2 can be obtained by mixing 4 colors: 1 drop of magenta, 4 drops of blue, 2 drops of green, 3 drops of white.
Nearest safe hex - #669999. Below you can see the block with #668da2 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #668da2 to the mixer and play with it.