Hex #17899b or rgb(23,137,155) in RGB space is the tint of bluish cian. It has hue angle of 188.18 degrees, value = 61 and saturation = 85. #17899b can be obtained by mixing 4 colors: 1 drop of blue, 5 drops of cyan, 1 drop of white, 4 drops of black.
Nearest safe hex - #009999. Below you can see the block with #17899b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #17899b to the mixer and play with it.