Hex #276e8a or rgb(39,110,138) in RGB space is the tint of bluish cian. It has hue angle of 196.97 degrees, value = 54 and saturation = 72. #276e8a can be obtained by mixing 4 colors: 3 drops of blue, 3 drops of cyan, 2 drops of white, 5 drops of black.
Nearest safe hex - #336699. Below you can see the block with #276e8a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #276e8a to the mixer and play with it.