Hex #2b5164 or rgb(43,81,100) in RGB space is the tint of bluish cian. It has hue angle of 200.00 degrees, value = 39 and saturation = 57. #2b5164 can be obtained by mixing 4 colors: 4 drops of blue, 1 drop of green, 2 drops of white, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #2b5164 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #2b5164 to the mixer and play with it.