Which Renau color would be similar to Estetica R30/28/26?
You've come to the right place! The best match to Estetica's R30/28/26 would be FS27: Strawberry Syrup. ***This is one of their more popular colors and will be available in the largest style selection.
You can watch Heather's in-depth color spotlight on this shade here: https://www.youtube.com/watch?v=2dWtorMgK4o
Another option is 130/28: Pumpkin Spice, however, this color is available in a limited amount of styles -- this shade is going to be a bit darker and more vibrant than your favorite Estetica shade.
You can watch Heather's in-depth color spotlight on this shade here: https://www.youtube.com/watch?v=HQJzuks5l4s
If both of these shades are too dark or vibrant, something like FS26/31: Caramel Syrup might work, although it is going to be more on the light brown side.
You can watch Heather's in-depth color comparison featuring FS26/31: Caramel Syrup (and added bonus, FS27) here: https://www.youtube.com/watch?v=dX0eIXwcHqM
I hope you find these suggestions helpful! Please keep us posted if you have any questions at all.