Hex #697788 or rgb(105,119,136) in RGB space is the tint of blue. It has hue angle of 212.90 degrees, value = 53 and saturation = 23. #697788 can be obtained by mixing 4 colors: 4 drops of magenta, 5 drops of blue, 5 drops of green, 3 drops of white.
Nearest safe hex - #666699. Below you can see the block with #697788 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #697788 to the mixer and play with it.