How do I check skin tone color?
It looked fine last night. This morning everyone is orange. Your eyes adapt, monitors lie, and skin is the one color the client will notice. Four real ways to know instead of guess.

Check skin tone against a hue reference, not your eyes. The classic method is the skin-tone line on a vectorscope, which works but lives inside one app and takes practice to read. SkinScope does the same check as a floating loupe over any app on your Mac: drop it on a cheek and it shows a green ring and checkmark when the hue is aligned, magenta or yellow when it is not, in real time, for $49 once. Color charts help at the shoot. A colorist is the expensive, slow way to make it someone else's problem.
Your eyes are the least reliable tool in the room.
After twenty minutes on a warm shot, warm looks neutral. Your monitor drifts, the room light changes, the reference image is a different person under different light. So you push, second-guess, pull back, and ship something that looks slightly sunburnt on the client's phone. The fix is a measurement you can trust more than perception. The problem is that the standard measurement is a scope trace most editors never learned to read.
Four ways to check skin tone.
"Is this skin tone right?"
What the colors mean.
Magenta
Too red or pink. Pull toward yellow or green.
Lime / yellow
Too yellow or green. Pull toward magenta or red.
Green + checkmark
Aligned with your target within tolerance.
Red + X
Too dark, bright or neutral to judge. Move the loupe to mid-tone skin.
Questions people ask before choosing.
Is there one correct skin tone color?
No. Skin varies in saturation and brightness across complexions, but its hue clusters tightly, which is why the vectorscope skin line exists. SkinScope checks hue direction against your target, so it works across complexions without forcing every face to one color.
Does SkinScope replace the vectorscope?
It replaces the part most people struggle with: isolating the face and reading the trace. Colorists who love scopes keep them; SkinScope adds a second opinion that works in apps without one.
Does it work in Lightroom and Photoshop?
Yes. It works over any window on your Mac, including apps with no scopes at all and browser-based review pages.
Requirements and license?
macOS 14 or later, Apple silicon and Intel. $49 once, one person on two Macs, no subscription. Details on the product page.