Color #405a64 name: very dark desaturated bluish cian
Hex #405a64 or rgb(64,90,100) in RGB space is the tint of bluish cian. It has hue angle of 196.67 degrees, value = 39 and saturation = 36. #405a64 can be obtained by mixing 4 colors: 1 drop of red, 2 drops of magenta, 5 drops of blue, 4 drops of green.
Nearest safe hex - #336666. Below you can see the block with #405a64 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #405a64 to the mixer and play with it.