For other related logos and images, see:
Rai 4 (pronounced Rai Quattro) was launched on July 14, 2008; because it was a digital channel (unlike sister channel Rai 1, Rai 2 and Rai 3), its logo did not follow the logo styles of the three channels and instead had a logo consisting of two squares, one with Rai's butterfly symbol and the number 4.
On May 18, 2010, Rai introduced a new corporate logo and overhauled the logos of its channels as part of its new unified brand identity & with the phaseout of Italian analogue TV broadcasting (leaving digital TV broadcasting as the only remaining format). Rai 4's graphics were adapted by simply replacing the "butterfly" with the new wordmark.
The logo changed its color from pink/magenta to purple but still appeared in its former colour in bumpers which slightly changed in line with Rai's corporate rebranding in November 2010 that appeared in 16:9 instead of their predecessors.
- RAI 4 - TV Identity - Frame by Frame, November 23, 2010
On September 12, 2016, Rai 4 (along with Rai 1, Rai 2 and Rai 3), redesigned its logo and launched a new graphics package. Rai 4's new logo design maintains Rai's corporate logo, removing the second square to the right and changing the font for the number 4. The channel's purple colour was also maintained, albeit in a different shade.