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When I use Google Translate to translate from Russian to Japanese, I get the
same Japanese word for two different colours of the rainbow.

> ➡️ голубой ➡️ 青い ➡️ blue
>
> ➡️ синий ➡️ 青い ➡️ blue

These are _not_ the same colour! When I translate from English to Japanese, I
get completely different words.

> ➡️ light blue ➡️ 水色 ➡️ светло-синий (lit. light-navy-blue)
>
> ➡️ dark blue ➡️ 濃紺 ➡️ тёмно-синий (lit. dark-navy-blue)

These are two shades of the same colour! What confuses the crap out of me is
that the Russian terms _given here_ are both light and dark shades of the same
colour we call _navy_ in English...but I'm looking for the true/separate "baby
blue" colour in Japanese.

Are 水色 and 濃紺 the words I'm looking for? Are these the words a Japanese person
would use to describe the two "blue" colours in the rainbow?

In trying to answer this question, I became even more confused because, in the
English "ROYGBIV" mnemonic, the three final colours are "blue, indigo, violet"
but in the Russian "КОЖЗГСФ" the three final colours are "baby blue, navy
blue, purple" (though the later is some sort of cognate with "violet," it
seems). It's like we're in different parallel universes.

I'm fairly certain that _navy blue_ is by no stretch of imagination _indigo_.
Likewise, _violet_ and _purple_ are two totally different colours.

I don't know the Japanese mnemonic for the colors of the rainbow, but things
are weird here too. Japanese appears to use 青い for _blue_ and 群青 for violet,
so in _this_ sense the Japanese rainbow is closer to the English one. But why
not 紫 for the final colour?

Please help!
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2021-01-13T08:54:21.467
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2021-01-13T12:41:07.067
2021-01-13T12:09:29.903
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30119
question
translation i-adjectives colors
How to properly translate the last three colours of the rainbow in Japanese?
Posted as an answer as requested (and yes the 'highly authoritative' was
sacarstic).

According to [this](https://www.nikon.co.jp/sp/kids/sky) highly authoritative
page the last colour is 紫. It gives 赤・オレンジ・黄・緑・青・藍（あい）・紫（むらさき）
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2021-01-13T12:41:07.067
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2021-01-13T12:41:07.067
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answer