Hex #40696b or rgb(64,105,107) in RGB space is the tint of cyan. It has hue angle of 182.79 degrees, value = 42 and saturation = 40. #40696b can be obtained by mixing 4 colors: 1 drop of magenta, 1 drop of cyan, 1 drop of green, 1 drop of black.
Nearest safe hex - #336666. Below you can see the block with #40696b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40696b to the mixer and play with it.