Hex #667177 or rgb(102,113,119) in RGB space is the tint of bluish cian. It has hue angle of 201.18 degrees, value = 47 and saturation = 14. #667177 can be obtained by mixing 4 colors: 4 drops of red, 5 drops of cyan, 2 drops of white, 4 drops of black.
Nearest safe hex - #666666. Below you can see the block with #667177 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #667177 to the mixer and play with it.