Hex #1787aa or rgb(23,135,170) in RGB space is the tint of bluish cian. It has hue angle of 194.29 degrees, value = 67 and saturation = 86. #1787aa can be obtained by mixing 4 colors: 1 drop of red, 5 drops of blue, 4 drops of cyan, 1 drop of green.
Nearest safe hex - #009999. Below you can see the block with #1787aa color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1787aa to the mixer and play with it.