Hex #178293 or rgb(23,130,147) in RGB space is the tint of bluish cian. It has hue angle of 188.23 degrees, value = 58 and saturation = 84. #178293 can be obtained by mixing 4 colors: 1 drop of red, 5 drops of blue, 3 drops of cyan, 2 drops of green.
Nearest safe hex - #009999. Below you can see the block with #178293 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #178293 to the mixer and play with it.