Hex #406879 or rgb(64,104,121) in RGB space is the tint of bluish cian. It has hue angle of 197.89 degrees, value = 47 and saturation = 47. #406879 can be obtained by mixing 4 colors: 3 drops of magenta, 4 drops of blue, 1 drop of cyan, 4 drops of green.
Nearest safe hex - #336666. Below you can see the block with #406879 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #406879 to the mixer and play with it.