Hex #407e7a or rgb(64,126,122) in RGB space is the tint of cyan. It has hue angle of 176.13 degrees, value = 49 and saturation = 49. #407e7a can be obtained by mixing 4 colors: 4 drops of red, 4 drops of blue, 5 drops of cyan, 3 drops of green.
Nearest safe hex - #336666. Below you can see the block with #407e7a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #407e7a to the mixer and play with it.