A Synonym for a color

What is a synonym for “Ultraviolet”?

“Invisible”

Either that or “Isabelle Collin Dufresne.”

350nm

InfraX-ray?

Miss Incredible

The Color Out of Space

Uberpurple?

Well, in the 19th century, they called it “oxidizing rays” or “chemical rays”.

It’s not invisible just because you can’t see it. It’s there, and some insects can see it, and some people can in specific circumstances.

Or about 3.54 eV, if you want the energy, or 856.55 THz for the frequency.

It’s Colour, despire HPL being an American. Don’t know why, but I’d imagine it involves a padded cell.

Black light.

According to Wikipedia’s article on tetrachromacy, some birds and some fish can see ultraviolet.

Allegedly, there are two human tetrachromats, but neither is “fully verified”. Both are female.

Superpurple!

(Super-duper-superpurple!!)

Ms. Matthews

The Black Angels

Lovecraft was a HUGE anglophile.

Beyond-Blue-Red

Yep. Birds have us beat.

There may be many women who have four cones. Whether they actually do something is the issue at hand. It would be almost certainly genetically impossible for men to have it in any form (Klinefelter syndrome?).

Fuzzy antecedents.

Also, OP: Smoke on the Water

As I understand it, tetrachromats have a slightly modified green (or maybe red) pigment gene on one of their X-chromosomes. So some of their green rods have a somewhat different pigment than usual and it resonds to light just a bit differently. That means they can distinguish many more shades of color than most people. But they can’t normally see in the UV.

The reason we can’t see in the UV is that the lens of the eye is opaque in those frequencies. Some people have replacement lenses that are not opaque, so they can see somewhat into that range, However, I understand that artificial lenses nowadays are made to be opaque just like natural lenses.

As far as the OP, how about octarine as a synonym. Or maybe not…

It’s not actually a “color,” since humans can’t see it. And although the birds and the bees can see it, we don’t know what they call it.

Great answer. (Though to nitpick, she’s actually Ultra Violet.)

Unjustified precision. Ultraviolet is a broad enough range that you can’t really even justify one digit of precision, much less five.