Hex #5d869b or rgb(93,134,155) in RGB space is the tint of bluish cian. It has hue angle of 200.32 degrees, value = 61 and saturation = 40. #5d869b can be obtained by mixing 4 colors: 1 drop of magenta, 3 drops of cyan, 3 drops of white, 4 drops of black.
Nearest safe hex - #669999. Below you can see the block with #5d869b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5d869b to the mixer and play with it.