TNT launched in its current incarnation as a cable channel on October 3, 1988.
The logo was revised in 1995, with the oval originally added to the logo three years earlier becoming smaller.
On June 12, 2001, TNT started using a new logo, along with the tagline "We know drama". The new logo used the same colors as the old logo in order to "retain familiarity". The new identity was developed by Trollbäck & Company of New York and launched with a campaign created by Goodby Silverstein & Partners of San Francisco, who also developed the tagline.
A new graphics package for TNT was launched on December 7, 2008, before the premiere of Leverage. The new design keeps the previous design and tagline, but the logo is now shiny silver or gold. In the graphics, the circle from the logo is seen as a "Dramatic Light" which revolves around characters from the network's series. The new look was designed by Troika Design Group.
In 2012, TNT tweaked the logo with a simple color, and the channel was given a new slogan: "Drama, Period" (stylized as "Drama." with the TNT logo as the "Period").