If you put black next to yellow (the way i see it) and then black next to red, intending to compare the 2 experiences, then i can confidently state that yellow makes the stronger contrast (difference/deviation) from black.

If we can agree on that then why would my red be your yellow? Wont that eliminate one possible choice of radical differences?

Also if i do the above with white instead of black then red is the one that makes the more significant contrast.

Also if the green is not a dark/deep version we can use green like the yellow above to make similar claims (works also with light blue).

Lets try now comparison tests during reduction of lighting conditions ie near dusk and see which color converges to black or deep blue faster.

I can vary the intensity of both yellow and red. Again, describe what colors look like to someone who only sees in grey scale.

You cant vary any f$cking intensity in my pc in the ms paint program (actually you can but only if you create your own colors and then you create insane results if you max out things so the idea has to involve some normal program default standard level intensity agreed upon). DEAL WITH IT!

If i start playing with intensity i can make any color look white or black. We are not trying to go blind here in more ways than one!

Also who cares about grey scale, are you a sea lion now? Political correctness gone achromatopsia wild suddenly?




No need for grey. Humans are sensitive to 3 basic colors (and recognize order 10 mil derivatives i think). And some women 4 (insects like butterflies too). Hence the irrational hypersensitive ideas they have about fashion and the inability to deal with my random color choices... lol

And none of that is relevant even the slightest bit to how you consciously experience red.

(You are completely incorrect on the intensity thing also - yellow doesn't look any more white than red does except for in relationship to its brightness.)

Again, describe what red looks like to someone who is colorblind. Use as many words as you see fit.

Brian, I think you are partly wrong here. Yellow is innately brighter, hence closer to white. The "except" part you are using is in fact very important in itself. Is sunlight yellow or white? You can't really tell. Is sunlight yellow/white or red? You can tell.

Sunset and dawn don't count.

Dark yellow doesn't really exist. Becomes brown. Dark red exists to a greater extent, imo.

Brightness is transparency/boldness value of RGB ratio - which can be solved by/is relative to everything else in contrast.

White to Black is what 1/1 : 1/1 : 1/1 is to 0:0:0 (Red:Green:Blue)

describe what red looks like to someone who is colorblind. Use as many words as you see fit

Red is a 1:0:0 ratio of RGB. You could attempt to get closeness/affinity by referring to the person's other senses, or tendencies for colors to fit certain emotions. The 'colorblind' part is not relevant, human language does not have the capacity to replicate natures insanity. If you describe red, then you just name an object that is always 'red' to you - you never actually describe red itself, you can't describe it to yourself never mind others and those without that ability.

I can quite easily make a blue or a red intense enough that you can't distinguish it from white.

You wouldn't like it though. It would be like looking at the sun.

Can you make black intense enough that you can't distinguish it from white?

It might help to start with the fact neither black or white are colors. Nor are they on opposite ends of any kind of scale.

Black is the absence of light of any wavelength. A black surface reflects no photons to your eye.

White is an equal mix of the three wavelength ranges our eyes are able to detect (RGB) with approximately equal amplitude.

A low level amplitude of equal RGB (white) appears grey, and when low enough it fades to black.

There are no other properties of visual light besides wavelength and amplitude, period. All other adjectives are subjective descriptions of some combination of those two properties.

Of course not. Black means that there is no intensity of light in the visible spectrum.

On the other hand, I can make a backhand to the back of your head indistinguishable from white.