From the "Baxter format" (named after the paper stock used) 'Legion of Super Heroes' number 1, August 1984. Keith Giffen plotting and pencils, Larry Mahlstedt inks and Carl Gafford's colours.
I like this stage and format in comics as the colours really pop. This is due to using Process colours almost as spots, so no mixing is required. By eye, I'd say that the background is about 80% magenta, and the blue is around 80% cyan with no other colours in the mix. The green fringe I'd say is about 20% cyan and 20% yellow. The paper is a thinker stock than previous comics and takes the colour and level of ink really well.