Hex #008bb4 or rgb(0,139,180) in RGB space is the tint of bluish cian. It has hue angle of 193.67 degrees, value = 71 and saturation = 100. #008bb4 can be obtained by mixing 3 colors: 5 drops of blue, 3 drops of cyan, 1 drop of green.
Nearest safe hex - #0099cc. Below you can see the block with #008bb4 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #008bb4 to the mixer and play with it.