Hex #6a7780 or rgb(106,119,128) in RGB space is the tint of blue. It has hue angle of 204.55 degrees, value = 50 and saturation = 17. #6a7780 can be obtained by mixing 4 colors: 2 drops of yellow, 3 drops of magenta, 4 drops of cyan, 3 drops of black.
Nearest safe hex - #666699. Below you can see the block with #6a7780 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #6a7780 to the mixer and play with it.