Hex #506fa0 or rgb(80,111,160) in RGB space is the tint of blue. It has hue angle of 216.75 degrees, value = 63 and saturation = 50. #506fa0 can be obtained by mixing 4 colors: 5 drops of magenta, 4 drops of blue, 4 drops of cyan, 3 drops of green.
Nearest safe hex - #666699. Below you can see the block with #506fa0 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #506fa0 to the mixer and play with it.