Hex #405656 or rgb(64,86,86) in RGB space is the tint of cyan. It has hue angle of 180.00 degrees, value = 34 and saturation = 26. #405656 can be obtained by mixing 4 colors: 2 drops of magenta, 2 drops of blue, 3 drops of green, 1 drop of black.
Nearest safe hex - #336666. Below you can see the block with #405656 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #405656 to the mixer and play with it.