Something strange you should know about color | QUICK ESSENTIALS

Learn a very important color theory for both digital and traditional art. Good for any digital art app, and applicable for character design, concept art, and illustration of all kinds!
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[pepinemi]

This both educated me and made me more confused at the same time

[acemaster]

Makes me want to see a color painting that, when converted to greyscale, is just a solid grey block.

[krupt]

When I started learning digital art, this gave my drawings a huge improvement. Remember guys when you want to go darker change the hue towards purple and when you want to go lighter change the hue towards yellow (for white lighting source).

[mysticat]

This is big! Will help a lot with thumbnail color composition in the future!

[welshwaffles]

Me: Okay... cool
my brain: *starts melting cuz everything I believed was a lie *

[z-beeblebrox]

1:58 "adding saturation decreased value!"
Well yeah, that's just basic supply and demand

[audaciousfox]

I actually saw this my self a few years ago. I had two water bottles that I would drink from at night, one was red and the other one was blue. All the lights were off, the only light in the room was the faint glow of the moon through the draperies. I remember being surprised that the blue bottle was a lighter gray even though the red one looked lighter during the day.
:)

[vakatt]

Even though I’m colorblind, I love watching these types of videos! They help me get a better understanding of how colors work and how other people see them

[EchoGillette]

It's because of the cones in your eyes! =D
I NEED to make a video about this, but essentially the 3 color receptors (red, green, blue) in your eyes aren't equally sensitive. Green cones are the most sensitive and blue cones are the least sensitive, so when your 2 most sensitive types of cones are both stimulated (green + red) you see yellow! =D The only color more stimulating to your eyes is white, which is ALL cones.

That's also why blue is the darkest pure hue. Because its the least your eyes can be stimulated apart from NO stimulation, which is black/darkness.

[FaputaVEVO]

Bro I'm colorblind and this is the sort of vids that pops up on my recommendations.
Gotta love the youtube alghorythm trolls man 🙃

[decb.]

Keep in mind, all of this was done in sRGB space. While it's useful for storing colors, it isn't so great for picking or modifying them. Using a perceptual space, such as Okhsl (which has been added to Photoshop since this video was made), will alleviate some of these issues. Also, the triangle-type pickers work somewhat better because they are an approximation of a perceptual color space. If you take a slice of hue in a perceptual space, you will get a roughly triangle-shaped "flag" of color, with grayscale on one side, and the most saturated point at the tip. However, the shape you get will not be a perfect triangle, and its shape changes depending on hue.

[dalmationblack]

A function I learned in a CS class that might be helpful to understand this phenomenon is how to calculate luma. When converting RGB to grayscale, there are a couple ways you can do it. A naive way is to just average the R, G, and B values, but this has the same problem as removing saturation did in this video. A way that's more accurate to our eyes is to calculate the "luma" of each pixel, where luma = 0.2126*R + 0.7152*G + 0.0722*B. (The reason this is more accurate is probably something to do with our eyes being more sensitive to green light than to red and to blue). This is almost certainly what photoshop is doing under the hood when you change colors to grayscale. It also reveals why the blues end up so dark, because there's a very low coefficient on the blue values of the pixels compared to red and green. Yellow, having both red and green, ends up the brightest after the luma conversion.

[levprotter]

Color is a well researched field of study. There are explinations for this phenomenon. Things like the "Abney effect" the "Munsell color system" and "Perceptual Uniformity" is what yall are looking for.

[sirtalkalotdoolittle]

GIMP has a "Convert colors to gray" option in its desaturation menu that allows you to check values without messing with saturation at all. You can see the difference between desaturation and converting to gray. The resulting images are vastly different in value.

[johnways]

If you want it simple warm colors have lighter values and cold colors have darker values, if you divide it that way it makes it easier to find the right value you want (though it's not alwase like that but starting with these basics is what helped me more to understand)

[Sarah-ptzj]

I'm a traditional artist, I think something like this is more intuitive when mixing paint. Gray is made with black and white, and white will always lighten. So it makes sense that a mid gray (meaning a lot of white was added) will be lighter than a pure blue pigment out of the tube. Similarly, it's common to lighten a color with yellow and no white, making it obvious that yellow is lighter than the other colors. I think it's beneficial for people to at least play around with mixing colors even if they're a digital artist.

[karlhendrikse]

What you're seeing is just what the conversion to grayscale is doing - it's setting the value of each pixel to the luminance (not the value) of the original color. Luminance is a perceptual quantity that is the same for two colors that appear to have the same brightness. Value is a mathematical quantity that's just max(R, G, B); it doesn't mean much in terms of human perception when compared between different hues and/or saturations.

[Proidysweet]

'This is not just digital'
*greyscales reality*
'See?'

[The-Secret-Dragon]

This explains so much about why I've always struggled with colour in my digital art vs traditional art. Thank you!

[UnwovenSleeve]

I'd love to see a painting where when converted to grayscale everything is one colour, if that's even possible.