Turquoise (colour)
Turquoise was a light shade of blue and green named after a gemstone.
The Sixth Doctor's first cravat was turquoise with cream polkadots. (TV: The Twin Dilemma, Attack of the Cybermen, Vengeance on Varos, The Mark of the Rani, The Two Doctors)
The Seventh Doctor wore a beige sweater vest with cherry question marks and turquoise zig-zags; (TV: Time and the Rani) most notably when ending the Paradise Towers Massacre, (TV: Paradise Towers) when protecting Delta from Bannermen, (TV: Delta and the Bannermen) when meeting Ace, (TV: Dragonfire) when foiling Davros's Imperial Daleks and the Supreme's Renegade Daleks during the Hand of Omega Incident, (TV: Remembrance of the Daleks) when resisting Helen A and the Kandyman, (TV: The Happiness Patrol) when keeping the Nemesis from Isomorph Cybermen and Neo-Nazis as well as Peinforte during the 1988 Cyberman Invasion of Earth, (TV: Silver Nemesis) when freeing the Psychic Circus from the Gods of Ragnarok, (TV: The Greatest Show in the Galaxy) when teaming up with UNIT and Ancelyn to stop Morgaine and the Destroyer, (TV: Battlefield) when confronting the Light and Josiah Samuel Smith in Gabriel Chase during 1883, (TV: Ghost Light) when defeating Fenric, (TV: The Curse of Fenric) when foiling the Tremas Master's Survival Stratagem, (TV: Survival) when foiling the First Rani's plan to trap him and his past incarnations as well as his past companions, (TV: Dimensions in Time) when dealing with Sontarans and Rutans, (PROSE: Shakedown) when dealing with Silurians, (AUDIO: The Silurian Candidate) when joining forces with URIC to defeat the mad Silurian scientist Mortakk and avenge his parallel counterpart, (COMIC: Final Genesis) when resisting Death to save the Decayed Master inside John Smith, (TV: Master) and when reuniting with Ace in the Memory TARDIS. (TV: The Curse of Fenric)
Yasmin Khan wore a turquoise jumper with a star during an encounter with Morax on 17th century England . (TV: The Witchfinders)
Jo Grant wore a turquoise blouse during the Spiridon Incident. (TV: Planet of the Daleks)
Peri Brown wore turquoise shorts when she helped the Sixth Doctor save his second incarnation and Jamie McCrimmon from Androgums Shockeye and Chessene as well as Sontarans Group Marshal Stike and Major Varl on Spain during 1985. (TV: The Two Doctors)
Jo Grant wore a turquoise jacket when she first met Draconians during the Dalek's Operation Divide and Conquer. (TV: Frontier in Space)
Nyssa wore a white blouse with turquoise stripes on the front and sleeves during her second encounter with the Mara. (TV: Snakedance)
Melanie Bush wore a turquoise blouse with white polka dots and turquoise polka dots on its white collar and trims as well as white capri pants with turquoise polka dots during the Paradise Towers Massacre. (TV: Paradise Towers)
The Fourteenth Doctor wore a single-breasted waistcoat and trousers of maroon and turquoise tartan. (TV: The Power of the Doctor-The Giggle)
The Curator, a future version of the Doctor, wore a turquoise cravat when he looked similar to an older version of the Sixth Doctor. (AUDIO: The Artist at the End of Time)
The Spy Master wore a copy of the Seventh Doctor's beige sweater vest with turquoise zig-zags and cherry question marks when he stole the Doctor's body as part of his master plan. The Thirteenth Doctor briefly wore it when she got it back. (TV: The Power of the Doctor)