Hex #2b5a64 or rgb(43,90,100) in RGB space is the tint of bluish cian. It has hue angle of 190.53 degrees, value = 39 and saturation = 57. #2b5a64 can be obtained by mixing 4 colors: 2 drops of magenta, 5 drops of blue, 4 drops of green, 1 drop of black.
Nearest safe hex - #336666. Below you can see the block with #2b5a64 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #2b5a64 to the mixer and play with it.