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Starfleet has the three uniforms - blue, gold and red in TNG onwards. I know that these each represent different areas, but is there a canon reason for why these colors were used for each area? e.g. why science is given blue? Please note - I am not asking about the change of uniform, but instead am asking about the canon significance of these colour in the ST universe.

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    This question may help some. – Xantec Mar 16 '14 at 22:10
  • The same colors were used for different divisions in TOS and the ENT prequel as well. I think the TOS movies might be the only ones without individual colors. – Izkata Mar 16 '14 at 22:20
  • @Xantec - More than just helpful, basically a duplicate – Valorum Mar 16 '14 at 23:05
  • Please note that the above question has been changed and it is not a duplicate of the linked question, but a similar question. – Often Right Mar 17 '14 at 7:01
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    Just so we can pick out who is going to die? – Marriott81 Mar 21 '14 at 11:59
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TNG Era

In the TNG Era, based upon the DS9 Tech Manual

Red for operations in TNG is given as the color of starfleet uniforms in general.

Blue for sciences was retained/returned from prior eras.

Gold¹ was returned because it was the traditional third color, but since Red replaced it for Operations, Technical services got gold instead.

TOS Movie Eras - TMP, and Rest of the TOS Movies

While there's no official canon on it, the licensed games have spoken to it, citing that there were complaints that it was too broad to use just the 3 colors.

We see a large number of different colors in TWOK and later - the left sleeve cuff stripe and the right shoulder strap are in specialty colors.

TOS & TAS Era

Roddenberry actually was combining late 1800's USN speciality colors, in simplification, with the carrier practice of colored shirts on the flight deck.

Gold¹ was the traditional color for line officer's stripes, and hence is the color for line officer tunics

Red was used for Naval Engineers. It was also used for other technical specialists.

Blue was used for sciences, mimicking the old USN cobalt blue for Medical and Light Blue for Civil Engineers.

Sparkly Silver/Gray is seen as a flashback for an academy uniform ("Shore Leave" - the cadet is created from Kirk's memories, so this might not be a contemporary uniform to the TOS era).

While not in films as such, Roddenberry spoke of the Line, Restricted Line, and Staff Officer distinctions. Roddenberry also spoke of historical colors of USN uniforms in one interview. Roddenberry was historically minded - he saw Star Trek as a Space Western, and so it wouldn't be too odd for him to reach back to the historical colors of the USN.

As an army officer, Roddenberry was also personally familiar with color distinctions - all US services except the Marine Corps have used color distinctions for specialists at some historical points (for the USAF, it was before the Blue uniforms were adopted). During Roddenberry's time in service, the use of colored ascots with fatigues was common (unit authorized), full dress uniforms used colored backdrops on the officer rank insignia, and colored aiguillettes on the service dress uniform; enlisted had not yet acquired the colored rings behind the US insignia worn on service dress.

New TOS Movies - Alternate Timeline

We see red service uniforms, all black instructor uniforms, gray and white admiral's full dress uniforms, and colored shirt ship uniforms.

The colors are the same as for TOS.

The second movie has moved to a slate gray dress uniform; it is unclear if this is a service or full dress uniform.

The DVD extras imply that the red service uniform is inspired by the main timeline TOS uniforms. The admirals' Gray & White is a clear homage to ST:TMP.

Late 19th Century USN Specialty Colors, for comparison

Line:                     no flashing color.
Medical:                  cobalt blue (1869-1883), maroon (1883-1918)
Pay:                  white (1869-1918)
Engineer:                 red (1869-1899)
Naval Constructor:        dark violet (1872-1918)
Professor of Mathematics: olive green (1872-1918)
Civil Engineer:           light blue (1881-1918)
Dental:                   orange (1913-1918)
Medical Reserve:          crimson (1913-1918)
Chaplain:                 black (June 16 - November 16, 1918)

The flashing color was worn between the officer's rank cuff stripes, or for passed midshipmen and later for ensign, to both sides of the single stripe. Line officers had no such trimming. It was also used on the flashings of the collar; white flashings were worn by line officers.

This practice was discontinued in 1918; at that same point, the USN adopted what would remain the basic pattern of uniforms and insignia through the present. At present, corps colors are used only in unit heraldry. Duty group assignments on carrier aircrews are indicated by colored turtleneck shirts.

Footnotes

¹ Gold: In TOS, it wasn't actually gold. It was green. How he came up with green, however... Truth is, the references to Gold Tunics are from extended universe sources, not from the actual footage. They are golden colored in the Animated series as well. This may, however, be derived from the carrier shirts.

References

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    Again, an excellent answer that completely fails to answer the question; why were the colours chosen. – Valorum Mar 18 '14 at 18:20
  • Richard: The DS9 Tech Manual is both in and outside the universe content - it specifies that red for command was chosen because of the {movie era} maroon uniforms as an in-universe element. – aramis Mar 18 '14 at 18:45
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According to Bill Theiss (Senior Costume Designer for Trek TOS) the colours were chosen on the basis of complementing the complexion of the various crew members, the ready availability of material at the studio as well as the desire to ensure that the uniforms were equally distinctive in black and white;

enter image description here

He also confirmed that the film stock chosen would make the colours act in odd ways on film so the canon uniforms we all know and love aren't actually the right colours at all;

Another quirk involving the original series’ tunics were the colors - in particular, “command.” Trekkies everywhere will swear Spock wore blue, Scotty wore red and Kirk wore gold. Wrong. The three Starfleet colors were blue, red and green. Lime green, to be exact. “It was one of those film stock things;” Theiss states, “it photographed one way - burnt orange or a gold. But in reality was another; the command shirts were definitely green.” As further proof, look at the wrap-around tunics as well as the dress uniform tunics of Kirk’s – all green. They came off as their true colors because they were constructed of different materials than the standard duty command shirts.

It struck me that once the decision had been made to give the four main cast members (Kirk, Spock, Bones and Scott) their own distinctive colours, it then made perfect sense that their various teams would also wear the same colour.

enter image description here

  • An excellent answer that DOES explain why the colors were chosen, though specific mostly to TOS, but still quite succinct. And showing off that even the crew of the Enterprise can enjoy a good game of Lasertag now and again...at least that's what I assume those garrish belts are all about. – Zibbobz Mar 18 '14 at 18:32
  • @Zibbobz - en.memory-alpha.org/wiki/Pain_band – Valorum Mar 18 '14 at 18:33
  • Wow...ToS was weird. – Zibbobz Mar 18 '14 at 18:41
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    Spock's Brain was the equivalent of Voy : Threshold, universally hated by fans and cast alike – Valorum Mar 18 '14 at 18:44
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A very handy chart can be found on Memory Alpha describing what each color uniform means in each era of Star Trek. http://en.memory-alpha.org/wiki/Starfleet_uniform

But to summarize the significance - different colors represent different divisions of Starfleet, essentially three core areas of operation within the Stafleet chain of command. They are:

Command

Comprises Admirals, Captains, and First Officers, responsible for directing orders to the other divisions, as well as general administration duties. This has gone through a number of color changes, with early Command uniforms being a Yellowish-orange, then a dim grey, gradually shifting towards a gold-tint, and eventually became predominantly red.

Operations

Represents the division of starfleet responsible for keeping things 'operating', representing Engineering but also Security (keeping operation of Starfleet 'secure'). Oddly enough, we see a reverse in color trends for Ops, with colors initially being Red, later Green, tan and blue, then red again for awhile, before finally taking on the orangeish/yellow tint Command once used.

Science

As a primarily exploratory and peaceful organization, Starfleet's Science department comprises those individuals in charge of Scientific discovery, including Science officers, but also includes medical staff and mental health departments. Their initial color was Teal, and green/blue has largely predominated their ranks with Teal being their most modern color, but a number of hues and even a few other colors such as white and orange have been used for Science officers in the past.

There has been some departure from this formula - particularly between 2260-2350, where several departments 'within' these divisions had their own uniform color, but these three divisions make up the primary parts of Starfleet, and uniform color has for most of the Star Trek canon been determined by which division the individual is in.

As for the reason each color was chosen...there's no canon reason behind the colors OR the change in colors over time (other than regulations changing over time being a pretty common thing in military dress code), but there IS a given reason that Red was chosen for command in TNG - the lighting for the show made Red look much more impressive than the original yellow-gold colors from TOS.

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    This doesn't really explain why the colours were chosen, either in-universe or out of it. – Valorum Mar 18 '14 at 18:04

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