Hex #204f6b or rgb(32,79,107) in RGB space is the tint of bluish cian. It has hue angle of 202.40 degrees, value = 42 and saturation = 70. #204f6b can be obtained by mixing 4 colors: 2 drops of blue, 1 drop of cyan, 1 drop of white, 4 drops of black.
Nearest safe hex - #336666. Below you can see the block with #204f6b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #204f6b to the mixer and play with it.