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| --- |  | ||||||
| draft: true |  | ||||||
| title: "Deterministically Mapping Strings to RGB Colors" |  | ||||||
| aliases: ["Deterministically Mapping Strings to RGB Colors"] |  | ||||||
| date: "2025-1-25" |  | ||||||
| series: ["strings-to-colors"] |  | ||||||
| series_order: 0 |  | ||||||
| author: "Nick Dumas" |  | ||||||
| authorTwitter: "" |  | ||||||
| cover: "" |  | ||||||
| tags: ["golang"] |  | ||||||
| keywords: ["golang"] |  | ||||||
| summary: "Using Go so I don't have to think about color palettes." |  | ||||||
| showFullContent: false |  | ||||||
| --- |  | ||||||
| {{< lead >}} {{ </ lead >}} |  | ||||||
| 
 |  | ||||||
| ## 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 space |  | ||||||
| ## The Implementation |  | ||||||
| ## The Results |  | ||||||
| Below is a sample of the "lorum ipsum" text with each word colored using this algorithm. |  | ||||||
| 
 |  | ||||||
| <p><span style="color:#FDC749;">Lorem</span> <span style="color:#D39A85;">ipsum</span> <span style="color:#452D59;">dolor</span> <span style="color:#3A852F;">sit</span> <span style="color:#0454D4;">amet</span>, <span style="color:#886B09;">consectetur</span> <span style="color:#31A0E5;">adipiscing</span> <span style="color:#99215D;">elit</span>. </p> |  | ||||||
| 
 |  | ||||||
| 
 |  | ||||||
| 
 |  | ||||||
| ## 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 |  | ||||||
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