The Hitchhiker's Guide to Digital Colour

The step by step guidebook for digital pixel pushers trying to get a firm grasp on colour to get sh*t done…

Welcome pixel hustler! If you are new to this site and seeking digital colour comprehension, you might as well start at Question #1…

8 replies on “The Hitchhiker's Guide to Digital Colour”

Hello there!
This content is Truly wonderful.
I had some muddy understanding of how a color is handled digitally. finding proper, non bullsh*t explanation is quiet a quest.
thanks for the hard work, I hope to read more of it soon.

PS: reading the lasts couple of posts I had cold sweat running down my spine, thinking about how of P3 display would “stretch” sRGB code value instead of using an intermediary transfer function when decoding my favorite cats pictures… is it what is happening??? are we doomed?!?!?


Welcome Charlie, and thanks for the kind words.

Regarding your horror, you have about nailed it. The good news is that one operating system is properly colour managed. The bad news is that the others are not.

On one operating system, almost all items are managed. On the others, it varies software to software. That means you can indeed expect the sRGB values to simply be blasted out “as is” or wrongly frequently.

And remember, transfer functions only control the intensity of light. They can’t change the chromaticities of the lights, which requires a different form of a transform. In fact, Apple’s Display P3 colour space uses the exact same transfer function as sRGB! So transfer functions along can’t fix things!

It’s great to see folks with enough foundational concepts to arrive at their own inferences. That’s amazing!

Liked by 1 person

Hello, I just wanted to say that I appreciate your hard work creating Filmic, answering questions on StackExchange and other sites and summing up the knowledge here. You are a hero! 🙂 I have learned a lot using those resources.


I mean there are a lot of expressions I’m not used to, and I have trouble to distinguish what is really informative. it would be possible to summarize main points?


It’s barely a three minute read, of which a summary of a summary seems to yield little. There are no assurances of communication across language barriers, sadly.


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