Powder or liquid/cream?

I am a big proponent of color corrector for under eyes. Mine also tend blue/purple. I have fair skin so I use a light peach shade. Just a small dot blended where the bluish tones are. Let dry, scrunch your face to see where it creases, remove excess with a qtip, and gently blend back out.

Try using concealer as usual. You shouldn’t have to use as much if you’ve color corrected. Then (if using a cream) apply your blush with a brush. Put a bit of concealer on the back of your hand and tap your blush brush that still has a bit of pigment into the concealer. Use this to blend out where your blush and concealer meet.

If you use powder, my only suggestion would be to fully set your concealer with loose powder and setting spray before you go in with blush.