Hex #4d91b3 or rgb(77,145,179) in RGB space is the tint of bluish cian. It has hue angle of 200.00 degrees, value = 70 and saturation = 57. #4d91b3 can be obtained by mixing 4 colors: 3 drops of blue, 2 drops of cyan, 3 drops of white, 2 drops of black.
Nearest safe hex - #6699cc. Below you can see the block with #4d91b3 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4d91b3 to the mixer and play with it.