Hex #00618b or rgb(0,97,139) in RGB space is the tint of bluish cian. It has hue angle of 198.13 degrees, value = 55 and saturation = 100. #00618b can be obtained by mixing 4 colors: 5 drops of blue, 1 drop of cyan, 1 drop of green, 1 drop of black.
Nearest safe hex - #006699. Below you can see the block with #00618b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #00618b to the mixer and play with it.