c1, c2, c3.
1=light blue, better with cyan.
2=just blue, a midtone shade of blue.
3=dark blue, can be black, better with bluish Black.
m1,2,3 is magenta.
y1,2,3 is yellow.
1=highlights.
2=midtones,
3=shadows.
Special masking in cells done by me.
Custom Cells available!
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From @bubblingwells