Hex #669aa2 or rgb(102,154,162) in RGB space is the tint of bluish cian. It has hue angle of 188.00 degrees, value = 64 and saturation = 37. #669aa2 can be obtained by mixing 4 colors: 1 drop of yellow, 5 drops of blue, 1 drop of green, 3 drops of white.
Nearest safe hex - #669999. Below you can see the block with #669aa2 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #669aa2 to the mixer and play with it.