Hex #69868c or rgb(105,134,140) in RGB space is the tint of bluish cian. It has hue angle of 190.29 degrees, value = 55 and saturation = 25. #69868c can be obtained by mixing 4 colors: 3 drops of magenta, 5 drops of blue, 5 drops of green, 4 drops of white.
Nearest safe hex - #669999. Below you can see the block with #69868c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #69868c to the mixer and play with it.