| ▲ | Too Much Color(keithcirkel.co.uk) |
| 60 points by maguay 2 days ago | 28 comments |
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| ▲ | bhaak 39 minutes ago | parent | next [-] |
| He’s talking about minifying CSS colors and I’m not sure if it is what I think it is. Do CSS minifier really adjust the colors in the CSS files to get better compression rates or to reduce the number of rules in the CSS? |
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| ▲ | rekabis 2 days ago | parent | prev | next [-] |
| > The magic number to remember is the "Just Noticeable Difference" (JND). For dE00, JND is around 2.0. Below that, people struggle to tell two colours apart. Below 1.0, basically no one can. Except for a tetrachromat. Specifically, a strong tetrachromat that has both four colour channels in the brain and a different frequency on the fourth cone. Who are, admittedly, hella rare. Apparently there are less than a few dozen confirmed world-wide. But they do exist. |
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| ▲ | lucideer 3 hours ago | parent | next [-] | | > admittedly, hella rare. Apparently there are less than a few dozen confirmed world-wide What's actually hella rare is tests for tetrachromacy. Given the total number of people who have ever taken such a test, I think it's reasonable to assume there are significantly more than a few dozen actual tetrachromats out there. | |
| ▲ | snarkconjecture 4 hours ago | parent | prev | next [-] | | Computer screens have three-dimensional color spaces. Tetrachromacy doesn't change that. | | |
| ▲ | tgv 3 hours ago | parent | next [-] | | Is that so? Our color perception is weird. It's one dimension split in three overlapping sectors. Adding a fourth sector may add information that makes it easier to distinguish colors. | | |
| ▲ | Jensson 3 hours ago | parent [-] | | We do have four sectors, 3 color perception and then the brightness perception that is used in the dark. In mid darkness you get a mix of all of those, although the fourth is not really perceived as a color so it can be a bit hard to use. |
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| ▲ | Zardoz84 3 hours ago | parent | prev [-] | | And the eye cones not are sharp filter, they overlap ranges with mid-low sensibility. That must be nought to someone with Tetrachromacy to percibe something different on a RGB screen. > More precisely, she had an additional cone type L′, intermediate between M and L in its responsivity, and showed 3 dimensional (M, L′, and L components) color discrimination for wavelengths 546–670 nm (to which the fourth type, S, is insensitive).
Source: Wikipedia |
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| ▲ | xyzsparetimexyz 4 hours ago | parent | prev [-] | | > But they do exist Do they? | | |
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| ▲ | cratermoon 2 days ago | parent | prev | next [-] |
| What's My JND? 0.0089
Can you beat it? https://www.keithcirkel.co.uk/whats-my-jnd/?r=A30iKP__7_Hb
#WhatsMyJND |
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| ▲ | bee_rider 2 hours ago | parent | next [-] | | .0037. IIRC it is possible to get a better score by looking around the screen, your peripheral vision might be somehow more sensitive. I can see what they mean about .02 though. If I weren’t specifically looking for difference that’s where the colors become less noticeable. | |
| ▲ | footydude 3 hours ago | parent | prev | next [-] | | 0.0042 apparently https://www.keithcirkel.co.uk/whats-my-jnd/?r=AaYkKP___-u- There's was 2 or 3 where i had no idea, guessed and was a way off. There's was 1 where i did a hail Mary and got it. It was interesting how some even towards the end were really obvious and others were really subtle - I'd say I did better with purple tones and worst with the blue / greys. | |
| ▲ | rXwubXUGAm 2 hours ago | parent | prev | next [-] | | I got a 0.0035. I'm on a Dell U2724D monitor which is supposed to have decent color accuracy and I cranked up the brightness and contrast to a maximum so I'm sure that helped a somewhat. I also noticed squinting and closing my eyes for a bit sometimes helped when I felt stuck. "Genuinely remarkable. You sailed past the theoretical human limit like it owed you money. I'd accuse you of cheating but I don't actually know how you'd cheat at this." | | | |
| ▲ | e1ghtSpace an hour ago | parent | prev | next [-] | | 0.0043, but to be honest, I could probably do better if I changed my monitor's settings. But I have it setup with low brightness for night time lights off viewing that won't wake me up. | |
| ▲ | xiconfjs 4 hours ago | parent | prev | next [-] | | What's My JND? 0.0032
Can you beat it? https://www.keithcirkel.co.uk/whats-my-jnd/?r=AUEjKP___831
#WhatsMyJND I need a better display for sure :) | |
| ▲ | WalterGR 4 hours ago | parent | prev | next [-] | | Discussed here: https://news.ycombinator.com/item?id=47321188 “Show HN: What's my JND? – a colour guessing game”
54 points | 8 days ago | 62 comments | |
| ▲ | tgv 4 hours ago | parent | prev | next [-] | | I'm color blind, and not even a little bit, but I scored 0.0084. I've noticed before that my perception of contrast is slightly better (than that of the people I ever compared it with; admitteldly, that's only a handful, but they weren't colorblind). | |
| ▲ | Jensson 3 hours ago | parent | prev | next [-] | | That mostly depends on the quality of your screen. | |
| ▲ | cafebabbe 4 hours ago | parent | prev | next [-] | | Only with chrome devtools :) | |
| ▲ | halflife 2 hours ago | parent | prev [-] | | 0.0021 |
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| ▲ | s1mon 33 minutes ago | parent | prev | next [-] |
| This is an amazing deep dive into color difference measurements and how sensitive the math is. The idea that we really need to save characters - bytes - in CSS when we have so many web sites chewing through 49 MB with the enshitification of the web is hard to reconcile. https://news.ycombinator.com/item?id=47390945 |
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| ▲ | termwatch an hour ago | parent | prev | next [-] |
| interesting approach! |
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| ▲ | jacknews 2 hours ago | parent | prev | next [-] |
| lol, the website reminds me of tropes like the professional cleaner whose house is messy, the chef who eats instant noodles at home, or the haut couture fashion designer who only wears jeans and tees. The colour expert whose website is monochrome. |
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| ▲ | chuckadams 43 minutes ago | parent | next [-] | | "The cobbler's children have no shoes." Maybe he understands the field so much that he prefers to exercise it minimally in his hobby. Or maybe he just can't decide. It also makes perfect sense for a study in colors to be against a neutral background. | |
| ▲ | olejorgenb 2 hours ago | parent | prev [-] | | My impression is that they are a compression expert, not a color expert. Make sense they chose uniform flat colors :D |
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| ▲ | sophieraiin 3 hours ago | parent | prev [-] |
| Am I pretty?? (story) |
