Hex #506b90 or rgb(80,107,144) in RGB space is the tint of blue. It has hue angle of 214.69 degrees, value = 56 and saturation = 44. #506b90 can be obtained by mixing 4 colors: 5 drops of magenta, 4 drops of blue, 3 drops of cyan, 4 drops of green.
Nearest safe hex - #666699. Below you can see the block with #506b90 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #506b90 to the mixer and play with it.