_______ __ _______
| | |.---.-..----.| |--..-----..----. | | |.-----..--.--.--..-----.
| || _ || __|| < | -__|| _| | || -__|| | | ||__ --|
|___|___||___._||____||__|__||_____||__| |__|____||_____||________||_____|
on Gopher (inofficial)
URI Visit Hacker News on the Web
COMMENT PAGE FOR:
URI Show HN: Do you know RGB?
Jeremy1026 wrote 1 hour 1 min ago:
I worked with a guy once, and I was coding up the design of website
from a PSD provided by the design team (yeah, that long ago). I was
talking to him at my desk when I was doing the header and said
something about needing to grab the hex for the red. This was a design
he'd probably not seen before, and certainly never saw the PSD of. He
called out the exact hex. That was one hell of a party trick.
stuaxo wrote 1 hour 1 min ago:
Funny clicking that when my phone is in night modd, so black in
greyscale.
AnimalMuppet wrote 3 hours 16 min ago:
Off topic, but this seems like a decent place to ask:
Has anyone else noticed the weird new grey color that automobiles have
in the last year or so? Does anyone know how to describe that color?
Can anyone explain how it is different from previous greys in RGB
terms? Or even in paint color terms?
Spire42 wrote 2 hours 33 min ago:
Nardo:
URI [1]: https://youtu.be/KchX52bIZSg
bbx wrote 3 hours 35 min ago:
Very fun game. Got 15/20. I think I'd do better at an HSL version.
aezart wrote 3 hours 45 min ago:
Interesting that sometimes a washed out color will look darker than a
pure color, even though there's more light overall.
skykooler wrote 3 hours 48 min ago:
It would be nice if this told you upfront how many questions there were
- after sixteen with nothing changing I figured it was probably endless
but apparently there are twenty?
arcanemachiner wrote 4 hours 5 min ago:
Definitely don't make the game end dafter one wrong guess. At least
give me some lives or something, damn. Or, better yet, just let me play
to the end, then give me my score.
fsckboy wrote 3 hours 20 min ago:
that's not really what you want, what you want is for the starting of
a new game to be automatic and not require extra clicks.
the way I'm suggesting (which is what the game is with extra clicks)
is a game of "what's my longest streak of correct guesses" which
actually makes your score look better than keeping your losses
around.
jagged-chisel wrote 2 hours 22 min ago:
That mechanic can be implemented without starting a new game at
all. Increment a counter on correct guess, reset to 0 on incorrect,
continue on through the game.
PaulHoule wrote 3 hours 59 min ago:
I feel that way. Also there are many cases where I can eliminate two
choices as obviously wrong but canât tell the difference between
two similar shades. I wouldnât feel bad getting disqualified for a
gross error but when it is two shades of bluish-green it doesnât
seem fair.
Another possibility is to give it more of a tournament feel where the
early cases are easy and the last ones are hard so I get disqualified
at 15/20 (webdev and photographer who does gfx programming for fun)
but a real goldeneye could go further. 3/20 does not represent my
skill.
comradesmith wrote 4 hours 14 min ago:
18/20, first try :)
jenadine wrote 4 hours 6 min ago:
You're good.
I made 0/20 on my first try.
siriusfeynman wrote 4 hours 15 min ago:
> do you know rgb
> colours are in hex
am I missing something or being dumb?
williamdclt wrote 4 hours 6 min ago:
This is hexadecimal notation for rgb. Each character represents 2
bytes, which encode a value from 0 to 255.
This is a bit more confusing because this is a shorthand notation:
youâd actually need 2 hexadecimal characters for 2 bytes (eg
#0077ff would be rbg(0, 127, 255)). In this shorthand notation, I
think thereâs an implied 0 (eg #07f is #0070f0).
So you canât represent all rgb colour with only 3 characters, but
for this use-case itâs fine.
In css you can use either of these 3 notations, for example
susam wrote 3 hours 10 min ago:
The 3-digit shorthand for hexadecimal RGB colours dates back to
CSS1, if not earlier.
From < [1] >:
> The format of an RGB value in hexadecimal notation is a '#'
immediately followed by either three or six hexadecimal characters.
The three-digit RGB notation (#rgb) is converted into six-digit
form (#rrggbb) by replicating digits, not by adding zeros. For
example, #fb0 expands to #ffbb00. This makes sure that white
(#ffffff) can be specified with the short notation (#fff) and
removes any dependencies on the color depth of the display.
I'm quite fond of the 3-digit hexadecmial RGB notation. It's a
concise way to express the colours I use for web pages or Emacs
font locking. In these cases, I rarely need the full
16-million-colour range offered by 6 digits. The 3 digits are
usually more than enough, at least to me.
URI [1]: https://www.w3.org/TR/CSS1/
siriusfeynman wrote 3 hours 21 min ago:
Every tool I've ever used referred to this as hex (including design
tools but maybe I'm sheltered), whereas rgb refers to the 0-255
triples
If someone asked me for a colour in "RGB" they'd be rightly
confused if gave them a hex format colour (obviously you can
convert between them but that's not what they asked for)
stavros wrote 43 min ago:
I'm not sure I agree. One is RGB decimal, the other is RGB hex.
It's not Lab, or HSV, or any other color space, it's RGB. Whether
it's decimal or hex doesn't change that.
jenadine wrote 4 hours 3 min ago:
In CSS, #07f is the same as #0077ff. (i.e. double each symbols)
joemi wrote 4 hours 10 min ago:
It's a shortened form of hex colors from CSS, but it does correspond
to RGB since the first character of the hex value is the R, the
second character is the G, and the third is the B. So for instance, a
hex value from this game of #F18 means the red is F (out of F), the
green is 1 (out of F), and the blue is 8 (out of F).
neilk wrote 4 hours 23 min ago:
I like it, but when you make your guess the mystery color should change
to the color it describes, not to green or red. You should use some
other aspect to indicate success - shape, motion, font, anything other
than color. You already have it shaking for an incorrect guess, so
thatâs good.
joemi wrote 4 hours 6 min ago:
Yeah that green tripped me up.
stared wrote 5 hours 0 min ago:
Thank you for sharing!
However, you both ask about colors and use color for confirmation. This
unfortunately is both confusing and makes a not nice overlap of one
modality used for two things.
Quick solution: just use the correct color. Use other modality (e.g.
shape V/X or text "Correct!" vs "Wrong!")
LorenDB wrote 5 hours 5 min ago:
Make sure to disable any dark mode extensions or the colors will not
show up correctly.
2earth wrote 5 hours 31 min ago:
Couldn't get above 3 for numerous tries, after 5 minutes or so managed
to get to 18! I learned a lot playing this (and reflected on things I
already "knew" but never reflected on why). Thanks!
ryandrake wrote 4 hours 54 min ago:
I tried about 5 times and never got more than 3 right. It would be
better if they started out a little easier and then increased the
difficulty. Currently it seems random. At any time you might get
three nearly identical green boxes and itâs game over.
dmd wrote 5 hours 46 min ago:
Iâm so confused. This is something people know? I mean, I can work it
out from first principles knowing how color mixing works, but it sounds
like people just ⦠know them?
Iâve been programming for almost 40 years and it would never have
occurred to me to memorize this sort of thing.
fsckboy wrote 3 hours 16 min ago:
>I mean, I can work it out from first principles knowing how color
mixing works
did you try it? if you can work it out from first principles because
you know how color mixing works, you should get a perfect score;
that's the game. If you don't get a perfect score, you need to
reinspect what you think you know about color mixing and even the
first principles.
dmd wrote 3 hours 15 min ago:
Yes, I got a perfect score. It just took me several minutes,
whereas coworkers of mine got 15+ in just a few seconds.
RheingoldRiver wrote 3 hours 20 min ago:
Just know them no. Able to sanity check that an RGB value is the
color it's supposed to be yes sometimes. It's not the most useful
skill because you almost always get a swatch now, but sometimes being
able to have some idea of how it'll look (should it be dark or light,
grey or intense color) saves me 10 seconds here and there.
I like playing guess-RGB games every now and then because it improves
the skill, but at the same time I find them really stressful haha.
meindnoch wrote 4 hours 32 min ago:
4096 colors is not too much to memorize.
AlienRobot wrote 3 hours 39 min ago:
In the English language, they call it "red"
In the programming language, we call it "f00"
4096 words for colors!
fsckboy wrote 3 hours 15 min ago:
f00 is 3840
tshaddox wrote 4 hours 57 min ago:
I doubt anyone has many of them truly memorized. It's more like
having the ability to quickly see each hex character and understand
roughly what percentage that is, then quickly visualize the resulting
color. My methodology playing this is to just convert each hex
character to high, medium, or low, so you end up with something like
"high red, medium blue, low green."
alpha_squared wrote 5 hours 25 min ago:
I got 14/20 on my first try just by knowing how the color mixing
works. A few simple rules:
- Higher values mean brighter colors
- The closer the individual colors are to each other, the closer to
"gray" it looks
- R + G = Yellow, R + B = Fuchsia, G + B = Teal
stavros wrote 46 min ago:
You also need to know the combinations, for when you get, eg, 0FF.
Though I was once asked to find 0FF and the choices also had 1FF in
them. Obviously it was pure luck.
siddboots wrote 5 hours 43 min ago:
Iâd say this is firmly about knowing how colour mixing works, and
not about memorising.
joemi wrote 5 hours 51 min ago:
Odd, I only got one wrong, and it gave me a 10/20 score at the end. Is
the scoring not 1-to-1?
edit: Oh, I see. Once you get one wrong the game ends immediately, but
the score includes the full 20 rounds that you're supposed to get
through.
susam wrote 5 hours 56 min ago:
First try: 16/20 [1] Excellent game!
URI [1]: https://imgur.com/a/c0yUOlw
maxwellito wrote 5 hours 54 min ago:
Good job! Thatâs really good!
Oh damn I didnât realised it was you!
Dear HN community, susam built the GuessMyRGB game which was a huge
inspiration for this game. Please take the time to play it!!
URI [1]: https://susam.net/myrgb.html
freeqaz wrote 5 hours 22 min ago:
Here is another one my friend shared with me that's interesting.
The time constraint adds some excitement!
URI [1]: https://color.method.ac/
dang wrote 5 hours 49 min ago:
That one had a thread last year, for anyone interested:
Guess my RGB - [1] - March 2024 (144 comments)
URI [1]: https://news.ycombinator.com/item?id=39882018
yogini wrote 3 days ago:
haha this is such a cool and fun game.
DIR <- back to front page