Hex #37a5cf or rgb(55,165,207) in RGB space is the tint of bluish cian. It has hue angle of 196.58 degrees, value = 81 and saturation = 73. #37a5cf can be obtained by mixing 4 colors: 5 drops of blue, 5 drops of cyan, 3 drops of white, 1 drop of black.
Nearest safe hex - #3399cc. Below you can see the block with #37a5cf color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #37a5cf to the mixer and play with it.