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Regex to match a hex colour like #fff or #1a2b3c

Amara Nwosu · 1 reply · 1,289 viewsregex javascript validation

Amara Nwosu2w ago

Lin Meilast wk.

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Solved by Lin Mei

/^#(?:[0-9a-f]{3}){1,2}$/i {1,2} allows exactly 3 or 6 hex digits. Add |[0-9a-f]{8} inside the group if you also want #rrggbbaa.

I need a regular expression that accepts #fff and #1a2b3c but not #12 or #ggg.

/^#(?:[0-9a-f]{3}){1,2}$/i

{1,2} allows exactly 3 or 6 hex digits. Add |[0-9a-f]{8} inside the group if you also want #rrggbbaa.