Hex #27819d or rgb(39,129,157) in RGB space is the tint of bluish cian. It has hue angle of 194.24 degrees, value = 62 and saturation = 75. #27819d can be obtained by mixing 4 colors: 3 drops of blue, 4 drops of cyan, 2 drops of white, 4 drops of black.
Nearest safe hex - #339999. Below you can see the block with #27819d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #27819d to the mixer and play with it.