Hex #4991ab or rgb(73,145,171) in RGB space is the tint of bluish cian. It has hue angle of 195.92 degrees, value = 67 and saturation = 57. #4991ab can be obtained by mixing 4 colors: 1 drop of yellow, 4 drops of blue, 1 drop of cyan, 1 drop of white.
Nearest safe hex - #339999. Below you can see the block with #4991ab color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4991ab to the mixer and play with it.