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+# @suaveplan/colour-convert-cmyk - Bidirectional RGB <-> CMYK colour space conversion with black generation for print workflows
+
+Bidirectional conversion between RGB and CMYK colour spaces using the standard Euclidean algorithm with black generation. CMYK is the subtractive model used in professional printing; these conversions are essential for print preview, pre-press workflows, and bridging screen colours with physical output.
+
+<!-- begin:auto-docs -->
+## Documentation tree
+
+- [cmyk](./src/cmyk/cmyk.md) — `cmyk.ts` provides bidirectional conversion between RGB and CMYK colour spaces. CMYK is the subtractive model used in p…
+  - [cmyk](./src/cmyk/cmyk.md) — `cmyk.ts` provides bidirectional conversion between RGB and CMYK colour spaces. CMYK is the subtractive model used in p…
+<!-- end:auto-docs -->
+
+## Installation
+
+```bash
+bun add @suaveplan/colour-convert-cmyk
+```
+
+## Quick Start
+
+```ts
+import { rgbToCmyk, cmykToRgb } from "@suaveplan/colour-convert-cmyk";
+
+const ink = rgbToCmyk({ r: 59, g: 130, b: 246 });
+console.log(ink); // { c: 76, m: 47, y: 0, k: 4 }
+
+const screen = cmykToRgb(ink);
+console.log(screen); // { r: 59, g: 130, b: 246, a: 1 }
+```
+
+## Modules
+
+- [`src/cmyk/cmyk.md`](./src/cmyk/cmyk.md) — RGB↔CMYK conversion implementation and API reference