After all those dyeing sessions, it's time to weave! Here are the colors I am now working with. From top to bottom, Tints, tones, direct modulation, and two levels of tints of the direct modulation series.
Notice in the grayscale version that the tints are reducing the saturation by lightening the value of the blue, while the tones are reducing it while leaving the value constant. The direct modulation is almost constant value as well. (Is it my imagination, or does it seem to be slightly darker in the middle of that series?)
One thing I did not include was a gradation of the blue to black by adding increasing amounts of black (or rather a very dark gray, since I was dyeing white yarn). So the darkest value is also the value of my most saturated blue.