Three Primary Colors
Although it may sound intimidating, this is perhaps one of the easiest, yet most impactful ways to shift the vibe in your image. It’s similar to the HSl panel, but instead of a range of colors you’re only working with the (3) primaries: Red, Green, and Blue. Tweak the blue to a few degrees left for a more aqua shine, that always gives your image a pop of unique color.
Create your roadmap, right? One you find the particular film stock you desire to emulate most, do a study of the colors within the stock’s shadows and highlights. Place a more purple-by contrast in the shadows to mimic Portra 160, or bump the golden warmth in the highlights to fancy Kodak Gold 200. Focusing on these 3 primary colors will impact your image best.