Hex #178ec2 or rgb(23,142,194) in RGB space is the tint of bluish cian. It has hue angle of 198.25 degrees, value = 76 and saturation = 88. #178ec2 can be obtained by mixing 4 colors: 5 drops of blue, 4 drops of cyan, 1 drop of white, 1 drop of black.
Nearest safe hex - #0099cc. Below you can see the block with #178ec2 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #178ec2 to the mixer and play with it.