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PHP
RGB ↔ Hex Conversion
Two-way conversion between #RRGGBB hex strings and [R, G, B] arrays. Handy when working with theme colors that come from both sources (CSS strings vs. RGB sliders).
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JavaScript
Hex ↔ RGB Conversion
Converts between hex colour strings (#rrggbb / #rgb) and RGB component objects. hexToRgb parses both shorthand and full hex formats. rgbToHex converts R, G, B integers (0–255) back to a hex string. Handy for colour manipulation, generating CSS variables, and passing colour data between libraries.