Aurélien Grimaud I would't apply it to the whole palette since the shift won't fit every color. Maybe blue shades will go more to the red and we want it to go more to cyan, but yellow is fine to shift to red and so on... I would use it differenfly for every color.

Aleksandra Uzelac. OK, I figured out your point. Currently, you can shift the hue of each color in the palette. Nevertheless, the shift value is applied regardless of the stop.

Have you posted this idea on Discord: https://discord.com/channels/1392979014481870948/1504004012750536845

Aurélien Grimaud yes, I know we can shift the hue for each color, but it applies to all steps, which is not ideal, since I would like to adjust a different hue for the tints (colors that go towards white), and a different hue for shades (colors that go towards black).

Yes, that's also me on Discord.

But here we are talking about saturation :) So again, same logic as for the hue shift should apply for saturation as well.

Aleksandra Uzelac Crystal clear. Regarding the article you have mentioned on Discord, the hue is shifted at the edges. What do you think about replicating this natural behavior prior to adjusting one by one? My point is the palette engine first forces shades and tints to result in a sufficient contrast ratio according to the light or dark color. The purpose is to avoid misharmony or misconsistency throughout the entire palette.

Here is a quick idea I made, which allows the hue and chroma to be shifted gradually to preserve a right consistency across source colors’ shades and tints.

Aurélien Grimaud hmm, this seems to me that the chroma and hue shift applies the same increase/decrease for both tints and shades. Is that correct? I'll try to clarify even more...

So for the chroma (saturation) shift, shades should be more saturated, and tints should be less saturated (generaly). I would like to have control how much/less saturation should be applied for each "edge" of the palette. Maybe I wouldn't need to apply any chroma shift for tints, but I would like to apply it for shades.

Regarding hue shift, same logic - I would like to have the ability to choose seperately for shades and tints. Using the yellow from your example, I would like to move the hue more towards the red for shades, so If the base color's hue is 58, I would change it so the darkest shade starts at 50 and it would gradually increase towards that 58 when moving towards the base color. And then for lightest tint maybe I would like it to stay the default 58 hue, but maybe I will prefer for it to be a different hue, depending on the base color.

Here is a tool that allows this, but it doesn't have any contrast ratios: https://hihayk.github.io/scale/#4/6/50/80/-51/67/20/14/1D9A6C/29/154/108/white

Aleksandra Uzelac Thanks for your feedback, I can share with you two mini-prototypes to depict the solution I imagined, regarding the actual constraints.

Here is the Hue: https://www.figma.com/proto/Mw8Z2RI8iDCoU3ZvZjZIAU/UICP-Screens?node-id=4890-17964&p=f&viewport=509%2C355%2C0.23&t=EnnXi99JYPqgm7vL-1&scaling=min-zoom&content-scaling=fixed&starting-point-node-id=4890%3A17964&page-id=4887%3A904&show-proto-sidebar=1

And here is the Chroma: https://www.figma.com/proto/Mw8Z2RI8iDCoU3ZvZjZIAU/UICP-Screens?node-id=4899-6154&p=f&viewport=509%2C355%2C0.23&t=EnnXi99JYPqgm7vL-1&scaling=min-zoom&content-scaling=fixed&starting-point-node-id=4899%3A6154&page-id=4887%3A904&show-proto-sidebar=1

The shades and tints related to the palette symmetry aspect are not embraced by the current engine. My proposal would be easier to implement at this time, giving you a specific instance to test in the first step. The hue/chroma are not adjustable by shade/tint, but the flow is not linear and can follow a specific pattern to dispatch the shift consistently.

The shift is stronger at both edges according to the value you have typed.

Aurélien Grimaud I reviewed your prototypes and the hue shift is not ideal. It adds +12 on the darkest shade, then it's 0 in the middle, and then it again goes up to +12 for the last tint. So there isn't a way to set a seperate hue shift for shades (-12) and another for tints (-5)?

The same issue with chroma. As I said before, best practice is for shades to be more saturated, the middle could be the default chroma value, and then tints should be less saturated or not, depending if it's something that I want for a specific color.

If that currently is not possible, I understand.

Aleksandra Uzelac Nothing is impossible. I think I can implement a hue/chroma specific shift as a therehold at both sides, without spending so much effort.