Lab colour

0:03 Lab colour · see the starting image
Lab colour separates colour adjustments from a simple RGB saturation change.

0:08 Increase colour separation
Colours move further apart; judge neutrals as well as vivid patches.

0:15 Reduce only the greens
Other hue families retain their settings.

0:22 Push the whole image warmer
Blue–yellow tint is a global cast adjustment, not a warm-colour selector.

0:30 Expose the underlying Lab curves
The sliders reshape these curves. Custom curve edits need careful comparison.

0:36 Reset and compare the starting state
Only this tool returns to its starting state. Other edits stay.

0:42 Explore the controls in the written tool reference
OmaRaw