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In most new titles, especially RPGs, item rarity is colour coded in an easy to remember white-green-blue-purple-orange progression, sometimes with omissions (no green, no orange) or additions (extra silver or neon blue as ultra-rare). Why and how was this introduced in gaming? Does this trend come from outside gaming? How did this evolve to become a trend that almost all games began to follow?

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The Meaning of Colors

While doing research on why the color-coded system came to existence, I remembered that each color is perceived to have a few meanings.

Color Emotions

Looking at this list, there could easily be some links to why they picked certain colors. For example, in Star Wars the Old Republic, the ordering of items is White (standard), Green (premium), Blue (prototype), Orange (custom), Purple (artifact), Deep Purple (legendary), Light Yellow (legacy), and Yellow (mission).

The Purple and Deep Purple items are very rare and powerful, which could easily be traced back to the meanings that purple has, sophistication and power.

Besides just this, these more rare and vibrant colors pop out more, and are more likely to draw a players attention. Mix this with making them rare, and these exotic and new colors will easily grab a players eye while they are playing as they are rare and new.

Color Psychology

Gaming History

Going from the history of gaming and seeing where it was used in gaming, the best contender for it is Diablo 1, which came out in 1996. Here they used them to clarify between different types of items.

They used gray for junk, white for normal, blue for magic, yellow for rare, orange for legendary, and green for an item that is part of a set. They more than likely used these colors because of their meanings and how they contrast the areas to which they would be.

Which is easier to see in a gloomy crypt, a dark gray glow or a bright yellow one?

After Diablo 2, World of Warcraft was the next major game that I could find that started using color coding for it's loot system, and it was very easy to see it was based off of the Diablo coloring system, which is the same for every game that uses the coloring system. Gray for junk, white for common, green for uncommon, blue for rare, purple for epic, orange for legendary, gold for artifact, and cyan for heirloom (with the latter two only being added in later additions to the game).

While Diablo 1 and 2 started the trend, I think it would be safe to say World of Warcraft really set it into stone.

Note: Both of these games were made by Blizzard Entertainment.

Non-Gaming History

Outside of gaming however, color coding based on value or rarity probably dates back a long time. Just one that is coming from the top of my head is the color of coins. Gold coins are made of a valuable metal, meaning a gold coin would be worth more than a silver coin. While this is not directly making lists based off of value, the value of the coins made their own color list, associating gold with value and silver with less value.

Coins in the Byzantine Empire

I refer to both the Solidus(gold coin) and the Follis(silver coin).

Much like the coins, indigo was another instance of color being related to value. The dye itself was rare in Europe at one point, so the mere use of the color dictated value. It might just be a color, but because it was different and rare, it had value.

Indigo Dye

Conclusion

There are multiple reasons to why I believe colors are used to denote rarity in games.

  • Unique colors stand out: on an ease of access standpoint, developers would choose colors that stand out somewhat and grab players attention, so they do not miss them.
  • Colors have meanings: with colors having meanings, different colors would subconsciously associate with how society has formed them. Purple being rare and royal, while gray being bland.
  • Consistency: once it was solidified by Blizzard in Diablo 1 and 2 and World of Warcraft, all of the other games that would use similar loot systems probably followed in suit. This would make the games friendlier to players who were coming from the Blizzard games. Even though some companies would make changes, they would remain generally similar.
  • Colors Have Had Value: Even though coinage does come with some real value tied to it (gold physically being worth more than silver), it still has been shaping society to understand that gold is more valuable. The same is for indigo.
  • Scarcity: The rarer items are usually the ones with colors that was once considered valuable, such as gold or purple, which could be a reason to why they are used for valuable items commonly.

Simply put, the color rarity system was re-adapted for games by Blizzard Entertainment with Diablo and World of Warcraft. As a basic concept however, it has been around for a while. It is all balanced deep in the human mind, and how we perceive colors and how scarcity works.

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The trend is coming indeed outside gaming. It is a mix of psychology and ranking (but ranking is also based on psychology). So the short answer is it is psychological trick.

If to talk about which game first used colored tiers/ranks I think it was FF, but I might be wrong according to this article:

Diablo:

The first game's division between standard (white) items, enchanted (blue) ones and uniques (yellow), may be considered an Ur-Example. The sequels add the green "set" category, where items from the same set are more powerful when used together, and gold or orange tier for uniques, while yellow items become a more powerful tier of "randomly enhanced" blue items.

In case you'd like to learn more without going too deep in psychology there is a Wiki article (very brief and simple version of psychological effects of colors). For deeper and more exact knowledge, I'd recommend to study psychology and philosophy (at least to read a textbook or attend several lectures in some college or university).

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    While these links may answer the question, Arqade requires users to summarize links in the answer body, to avoid an answering becoming useless due to link rot. Feel free to repost your answer with more details in the answer body itself. – Wipqozn Sep 22 '17 at 22:00
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    I feel like it is a combination of ranking and better colors. For example, white is bland, while a saturated orange or purple has more appeal, or at least looks more interesting, regardless if the viewer likes the color. I might do research and try my own answer at this. – Shadow Z. Sep 27 '17 at 15:05

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