Hex #717b80 or rgb(113,123,128) in RGB space is the tint of bluish cian. It has hue angle of 200.00 degrees, value = 50 and saturation = 12. #717b80 can be obtained by mixing 4 colors: 4 drops of red, 5 drops of cyan, 4 drops of white, 5 drops of black.
Nearest safe hex - #666699. Below you can see the block with #717b80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #717b80 to the mixer and play with it.