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1.6 KiB
1.6 KiB
| draft | title | aliases | date | series | series_order | author | authorTwitter | cover | tags | keywords | summary | showFullContent | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| true | Deterministically Mapping Strings to RGB Colors |
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2025-01-25 |
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0 | Nick Dumas |
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Using Go so I don't have to think about color palettes. | false |
{{< lead >}} {{ </ lead >}}
Inspiration
The XMPP site has a document describing https://xmpp.org/extensions/xep-0392.html#algorithm-genpalette
The Plan
- Take an arbitrary UTF-8 string
- Generate an RGB or RGBA color code for it in a deterministic way
- SHA1 the string
- Interpret equally sized chunks of the hash as integers
- Scale those integers into an 8-bit unsigned space
The Implementation
Hashing
{{< highlight go >}} {{</ highlight >}}
Interpolation
- Not sure if interpolation is the right technical term
- Using generics {{< highlight go >}} {{</ highlight >}}
The Results
Below is a sample of "lorem ipsum" with each word colored using this algorithm.
Lorem ipsum dolor sit amet, consectetur adipiscing elit.
It doesn't look too bad.
Possible Improvements
- Provide HSV or HSL color values
- Light/dark mode awareness
- Accessibility. The colors chosen are effectively random with no regard for color schemes, background, display device capability