Hex #40a5ce or rgb(64,165,206) in RGB space is the tint of bluish cian. It has hue angle of 197.32 degrees, value = 81 and saturation = 69. #40a5ce can be obtained by mixing 4 colors: 1 drop of red, 4 drops of blue, 5 drops of cyan, 2 drops of white.
Nearest safe hex - #3399cc. Below you can see the block with #40a5ce color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40a5ce to the mixer and play with it.