The chocolate is naturally that shade, thanks to an innovation by Swiss cacao producer Barry Callebaut.
The confectionery giant is the first company in the world to commercialise the naturally pink chocolate, which was unveiled past year.
Nestle is launching the new flavor - KitKat Chocolatory Sublime Ruby - in stores in Japan and South Korea on Friday, and online in nine other territories including the U.S., U.K., Germany, France and Switzerland.
KitKat fans are about to get their first taste of ruby chocolate.
Barry Callebaut unveiled the ruby variety in September, creating a fourth kind of chocolate in addition to dark, milk and white.
"Because we know that our consumer is always looking for new news".
However, the bad news is that it's only available in Japan and South Korea at the moment, as they're gearing up for Valentine's Day.
Ruby chocolate is made from the ruby cocoa bean.
Barry Callebaut CEO Antoine de Saint-Affrique said: "I am very pleased that our innovative breakthrough Rub chocolate has come to life so quickly through our partnership with Nestlé and the pioneering KITKAT brand in Japan".
"I have created an especially simple KitKat that allows you to enjoy the characteristic fruity fragrance and subtle acidity of ruby cacao to the fullest, allowing consumers to enjoy wonderful flavours that have never been experienced before".
According to the company, the new Kit Kat will also be sold at their Chocolatory boutique stores in Korea in the the near future, followed by a rollout to other countries at a later date.
The maker of KitKats is on a mission to produce chocolate with a reduced sugar content.
CHOC FOR THOUGHT Can YOU name these '90s chocolate bars?
"We really want to be the drivers of the solution".
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