Brown
Mahogany was a shade of brown, red and orange, named after a certain wood.
The War Doctor wore a mahogany and alabaster ikat scarf when helping Biroc free his fellow Tharils, (AUDIO: Lion Hearts) when working to stop the Dalek Time Strategist on Atherea, (AUDIO: The Shadow Squad) when he first meets Case, (AUDIO: Consequences) when working to save a world by posing as a legend, (AUDIO: Destroyer|Saviour), when going on an adventure within a dream, (AUDIO: The Keeper of Light) when stopping the Thal Dylon from his error which nearly condemned his people to the Dalek Empire, (AUDIO: Temmosus) when working to save Lucana during his first encounter with Berserker Daleks, (AUDIO: Rewind) when hunting the Barber-Surgeon, (AUDIO: The Mission-The Horror) when reuniting with Case, (AUDIO: A Mother's Love) when dealing with a mad Dalek Berserker on Sunspire, (AUDIO: Berserker) when dealing with Memnos, (AUDIO: Memnos) and when working to free Case from Dalek control. (AUDIO: The Hybrid's Chocie-Exit Strategy)
The Third Doctor wore a mahogany paisley cravat during the UNIT Master's Daemonic Deception. (TV: The Dæmons)
The Fourth Doctor wore a double-breasted frock coat of mahogany velvet with peaked during his first encounter with Zygons during their gambit with a Skarasen, (TV: Terror of the Zygons) during his first encounter with Morestrans when facing an anti-matter monster on Zeta Minor during 37166, (TV: Planet of Evil) when he met Sutekh and some servitors dressed as mummies on 1911. (TV: Pyramids of Mars) during the incident with the Mandragora Helix, (TV: The Masque of Mandragora ) during his reluctant separation with Sarah Jane Smith after defeating Eldrad, (TV: The Hand of Fear) and when facing the Decayed Master and Chancellor Goth. (TV: The Deadly Assassin)
The Curator, a future version of the Doctor, wore mahogany trousers when he looked similar to an older version of the Fourth Doctor during his meeting with the Eleventh Doctor after the Fall of Gallifrey. (TV: The Day of the Doctor)
Ace wore a mahogany leather safari jacket during her encounter with Mark VII Daleks on the Obscura during the Last Great Time War. (AUDIO: Soldier Obscura [+]Loading...["Soldier Obscura (audio story)"])
The Half-Face Man wore a single breasted waistcoat of ebony black moleskin with a mahogany brown trim and a fob watch during the 1890s. (TV: Deep Breath)
Wrack, the leader of the Eternals on the Buccaneer, wore mahogany breeches. (TV: Enlightenment)
John Smith, a clone of the Tenth Doctor who became husband of Rose Tyler and father of Mia, wore a mahogany shirt. (COMIC: Empire of the Wolf)