Hex #155364 or rgb(21,83,100) in RGB space is the tint of bluish cian. It has hue angle of 192.91 degrees, value = 39 and saturation = 79. #155364 can be obtained by mixing 4 colors: 1 drop of yellow, 4 drops of blue, 2 drops of cyan, 5 drops of black.
Nearest safe hex - #006666. Below you can see the block with #155364 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #155364 to the mixer and play with it.