Hex #40a5a0 or rgb(64,165,160) in RGB space is the tint of cyan. It has hue angle of 177.03 degrees, value = 65 and saturation = 61. #40a5a0 can be obtained by mixing 4 colors: 3 drops of blue, 1 drop of cyan, 2 drops of green, 2 drops of white.
Nearest safe hex - #339999. Below you can see the block with #40a5a0 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40a5a0 to the mixer and play with it.