Colour discrepancies on output

Hi Resolve community.

I've got a question about colour output and colour settings. I'm creating some content to use in live streaming and I'm using Resolve for video and Affinity Designer for static images on a macbook pro.

I have a standard colour background which is picked from a custom palette, with RGB of 22, 151, 158. I've used the same selection when using the 'solid color' tool to generate a backdrop in Resolve as I do when defining my colour in Designer, picking from the apple colour palette (I've predefined my standard colours in custom palette)

However, when I combine my video backdrop in Resolve with my overlay generated from Designer, the colour does not match and is slightly off.

Is this a problem or a setting I need to look at in a colour profile somewhere to make sure both programs are using the same, or something else do you think?

Any guidance appreciated as it's giving me a few glitchy issues when I overlay a static (like a footer template I'm using for a ticker) onto a video running in the background. You can see at the bottom where I've overlaid my footer mask, the background colour rendered out of Resolve is slightly darker than that rendered from Designer. Both are the same RGB readings when I look at the components in each program.

I am including the background in the resolve video (rather than making it alpha channel rendered to transparency), as I can render it out in H.264 to make it a usable file size. This example ( a 5 minute countdown timer) is 190.1MB when rendered out in H.264, but when rendered using ProRes settings to preserve the alpha channel it came out at about 13GB so too big to be usable.

Where do you think I need to look to get a colour match between still images and rendered video for the same RGB values?

Thanks

Jason

Does Designer use ICC/monitor profiling?

Open that design graphic in Fusion and probe rgb values, does it still show the same as it should be? Which colorspace are these RGB values related to (shouldn’t matter with no cm though)? Another thing is to check all your color settings in Resolve, you are in non-colormanaged project I assume? Is it Resolve v17? Create a compound clip from your generator, open it in Fu page and check its RGB values too.

Thanks for the advice. I've learnt a lot about colour profiles this week, that's for sure, and narrowed down where the problem is.

Yes, Designer does use colour profiles, so I've made changes there to ensure it's using the same Rec.709 colour profile as Davinci resolve is set to for the project (Davinci YRGB, Rec.709 Gamma 2.4).

When I looked at the RGB values in the Davinci color screen, they're not the values I'm expecting (no surprise there, clearly!). I've re-set the RGB values for the background manually to the planned values and it matches up okay.

Where the problem has come from, is that the saved profile in the Apple color palette menu is not replicating the RGB values that it should be. In both designer and in Davinci, I just select from that colour palette, but rather than setting the background to the expected RGB of 22,151,158 it's using 31,134,139.

The problem seems to be how my template palette has been set up for some reason, so I'll have to go back and work on that I guess.

Thanks for the advice. I can fix this particular problem by just manually editing the values to the correct ones now until I can figure out the colour palette root cause.

Thanks