Hex #2b5679 or rgb(43,86,121) in RGB space is the tint of blue. It has hue angle of 206.92 degrees, value = 47 and saturation = 64. #2b5679 can be obtained by mixing 4 colors: 4 drops of blue, 1 drop of cyan, 2 drops of white, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #2b5679 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #2b5679 to the mixer and play with it.