Name the blue when definitely looks red, but is rather green in fact?


If you can name more choose the bluest one!

  • 2
    $\begingroup$ Should "when" be "which"? $\endgroup$ Commented May 17, 2016 at 0:54
  • $\begingroup$ @JonathanAllan Better no $\endgroup$
    – kamenf
    Commented May 17, 2016 at 1:04
  • 12
    $\begingroup$ If I said this out loud, I'd think I was having a stroke. $\endgroup$
    – paste
    Commented May 17, 2016 at 2:29
  • $\begingroup$ What color is DEF? It's called "AdBlue" by some marketing guys... the same marketing guys who call it "green" during their daily greenwashing exercise. $\endgroup$
    – Alexander
    Commented May 17, 2016 at 9:51
  • $\begingroup$ The veins inside a human body. They are red because of the blood inside them, they were drawn blue in my biology books and they might as well be green because I have daltonism. :) $\endgroup$
    – Marius
    Commented May 17, 2016 at 11:38

5 Answers 5


I just had some


and they seem to fit since

They are called blue and are blue on the outside, yet when smeared look red and are red when they are ripening. The blueberry plant is mainly green, and the berries are green before they ripen, many times are green inside but turn red when cooked.

and they fit the hint since

They have blue in the single word name of this fruit.

  • $\begingroup$ That's the name. Just needs right explanation of "red" and "green"... without smashing them or doing anything else ;) $\endgroup$
    – kamenf
    Commented May 17, 2016 at 12:38
  • $\begingroup$ Yes, it is red while still green (i.e. while ripening). $\endgroup$
    – kamenf
    Commented May 17, 2016 at 20:28

I think it might be

a blue steak

because it definitely looks red inside and it is also green because

it doesn't use as much energy to cook


I'm gonna throw

blue raspberry

out there

it's a flavor associated with the color blue, named after something usually red, based on something (mostly) green


Could it be



Violet is of a shorter wavelength than what we actually call blue - lying between "blue" and "ultraviolet" (which we cannot see) and is hence really "bluer" than blue.
Violet when observed by our eyes looks like a red-ish blue
(In the traditional colour wheel used by painters, violet and purple lie between red and blue).
In an RGB model a vivid violet would contain rather a surprising amount of Green.

  • $\begingroup$ Nice guess, but no. And does not fit all clues :) $\endgroup$
    – kamenf
    Commented May 17, 2016 at 2:46
  • $\begingroup$ I think it fits all the clues - I was wondering only about the use of "taste" in the title. Will have to think... $\endgroup$ Commented May 17, 2016 at 2:48

I think it is

Blue grape


They are usually blue, the insides are green, when crushed together for wine and such, they are red.


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