Hex #307d9a or rgb(48,125,154) in RGB space is the tint of bluish cian. It has hue angle of 196.42 degrees, value = 60 and saturation = 69. #307d9a can be obtained by mixing 4 colors: 4 drops of blue, 4 drops of cyan, 3 drops of white, 5 drops of black.
Nearest safe hex - #336699. Below you can see the block with #307d9a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #307d9a to the mixer and play with it.