Hex #699591 or rgb(105,149,145) in RGB space is the tint of cyan. It has hue angle of 174.55 degrees, value = 58 and saturation = 30. #699591 can be obtained by mixing 4 colors: 2 drops of magenta, 5 drops of blue, 5 drops of green, 5 drops of white.
Nearest safe hex - #669999. Below you can see the block with #699591 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #699591 to the mixer and play with it.