Hex #6689a2 or rgb(102,137,162) in RGB space is the tint of blue. It has hue angle of 205.00 degrees, value = 64 and saturation = 37. #6689a2 can be obtained by mixing 4 colors: 2 drops of red, 2 drops of magenta, 5 drops of cyan, 1 drop of green.
Nearest safe hex - #669999. Below you can see the block with #6689a2 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #6689a2 to the mixer and play with it.