Regular Expressions 101

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Regular ExpressionOpen Workspace

`
^(?:#(?:([\da-f][\da-f])([\da-f][\da-f])([\da-f][\da-f])|([\da-f])([\da-f])([\da-f]))|\(?(\d|1?\d{2}|2[0-5]{2})\s*,\s*(\d|1?\d{2}|2[0-5]{2})\s*,\s*(\d|1?\d{2}|2[0-5]{2})(?:\s*,\s*(?:\d|1?\d{2}|2[0-5]{2}))?\)?)$
`
ig

Description
Created·2026-02-03 03:22
Updated·2026-02-04 03:36
Type·Match
Flavor·Golang

match: #aabbcc #abc (255,255,255) (255,255,255,255) 255,255,255 no match: #gggggg #ggg 256,256,256

Submitted by Doyoung
Open Workspace