Hex #5d708b or rgb(93,112,139) in RGB space is the tint of blue. It has hue angle of 215.22 degrees, value = 55 and saturation = 33. #5d708b can be obtained by mixing 3 colors: 3 drops of blue, 4 drops of white, 4 drops of black.
Nearest safe hex - #666699. Below you can see the block with #5d708b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5d708b to the mixer and play with it.