Comparison · both tools are free

Colour Converter vs Regex Tester — which one should you use?

Side-by-side comparison of features, use cases, and pricing for two of our most-used tools.

Colour Converter

Developer Tools · 870,000/mo

Regex Tester

Developer Tools · 980,000/mo

Feature	Colour Converter	Regex Tester
Category	Developer Tools	Developer Tools
Free to use	Yes — no signup	Yes — no signup
Runs in browser	Yes	Yes
Standalone tool site	Embedded on UtilityApps	Embedded on UtilityApps
Best for	Convert between HEX, RGB, HSL, and the 147 named CSS colours. Live preview swatch and one-click copy.	Test JavaScript regex patterns live in your browser. Live match highlighting, named + numbered capture groups, all standard flags.
Top keyword	color converter	regex tester
Common ground	—	—
Mobile-friendly	Yes	Yes

When to use each

Both tools are free. The better choice depends on what you're trying to do.

Use Colour Converter when…

You need color converter specifically.
You're working in the developer tools category and want a focused tool.
You want a battle-tested option — Colour Converter is one of our most-used tools.
You want a quick, embedded version that runs in the same page.

Use Regex Tester when…

You need regex tester specifically.
You're working in the developer tools category and want a focused tool.
You want a battle-tested option — Regex Tester is one of our most-used tools.
You want a quick, embedded version that runs in the same page.

Try it now

Colour Converter

Convert between HEX, RGB, HSL, and the 147 named CSS colours. Live preview swatch and one-click copy.

Try it now

Regex Tester

Test JavaScript regex patterns live in your browser. Live match highlighting, named + numbered capture groups, all standard flags.

Common questions

Questions about this tool

What's the difference between Colour Converter and Regex Tester?

Colour Converter is built for convert between hex, rgb, hsl, and the 147 named css colours. live preview swatch and one-click copy. Regex Tester is built for test javascript regex patterns live in your browser. live match highlighting, named + numbered capture groups, all standard flags. They share the same UtilityApps quality bar — free, no signup, mobile-friendly — but solve adjacent problems.

Which one should I use?

Use Colour Converter if your primary need matches its description. Use Regex Tester if your need matches its description. Both are free, so trying both is also a valid answer.

Are both Colour Converter and Regex Tester really free?

Yes. Both tools are free with no signup, no credit card, and no usage caps. We monetize through optional digital products and tasteful display ads, never by gating the tools.

Can I use both at the same time?

Yes. Many users keep both bookmarked. UtilityApps tools are designed to compose — output from one tool is often useful input to another.

Are they private?

Both tools follow the UtilityApps privacy model: most processing happens in your browser, and we never log inputs. See the privacy policy for details.

Feature

Colour Converter

Regex Tester