Hex #276569 or rgb(39,101,105) in RGB space is the tint of cyan. It has hue angle of 183.64 degrees, value = 41 and saturation = 63. #276569 can be obtained by mixing 4 colors: 2 drops of magenta, 4 drops of cyan, 2 drops of green, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #276569 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #276569 to the mixer and play with it.