Hex #4088d5 or rgb(64,136,213) in RGB space is the tint of blue. It has hue angle of 211.01 degrees, value = 84 and saturation = 70. #4088d5 can be obtained by mixing 3 colors: 1 drop of magenta, 1 drop of blue, 2 drops of cyan.
Nearest safe hex - #3399cc. Below you can see the block with #4088d5 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4088d5 to the mixer and play with it.