HEX Color Validator
Paste a HEX color to check whether it is valid — complete with the reason if it is invalid and a component breakdown if it is valid. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
#1E90FF
Example Output
✓ VALID — RRGGBB, no alpha
How to Use
- 1Paste the a HEX color you want to check into the input box.
- 2If the tool offers extra options (e.g. dialect, flags, or variant), set them as needed.
- 3Click Validate (or press Ctrl+Enter).
- 4Read the result badge — VALID, INVALID, or VALID with a warning — along with the details and the list of issues, if any.
About HEX Color Validator
HEX Color Validator checks whether a string is a valid CSS hexadecimal color: 3, 4, 6, or 8 digits (with or without #). The 4 and 8-digit forms include an alpha channel. The tool shows the recognized form and its normalized version.
Useful for validating design tokens, theme inputs, or color values before using them in CSS.
FAQ
Is my data sent to a server?
No. All validation runs in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.
How is this validator different from a parser or formatter?
A validator answers one question: is this input correct/valid? It returns a valid/invalid badge with the reason. A parser breaks input into its components, and a formatter tidies its layout. Use a validator when you just need to confirm something is sound before using it.