Hex #507185 or rgb(80,113,133) in RGB space is the tint of blue. It has hue angle of 202.64 degrees, value = 52 and saturation = 40. #507185 can be obtained by mixing 4 colors: 5 drops of blue, 1 drop of green, 5 drops of white, 5 drops of black.
Nearest safe hex - #666699. Below you can see the block with #507185 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #507185 to the mixer and play with it.