Category: Uncategorized

Convert colors between HEX, RGB, and HSL formats instantly with this free online color picker. Use the visual picker or type values directly — all conversions happen in real time, right in your browser.

How to Use This Color Converter

1. Pick a color using the visual color picker
2. Or enter a HEX, RGB, or HSL value and click the arrow button
3. All three formats update instantly
4. Copy any format or get ready-to-use CSS code

Color Format Reference

• HEX — 6-digit hexadecimal notation: #RRGGBB (e.g. #2563eb)
• RGB — Red, Green, Blue values 0-255: rgb(37, 99, 235)
• HSL — Hue (0-360°), Saturation (0-100%), Lightness (0-100%): hsl(217, 84%, 53%)

When to Use Each Format

• HEX — most common in web design, compact and widely supported
• RGB — useful when you need alpha transparency (rgba)
• HSL — intuitive for creating color palettes and adjusting brightness/saturation

Privacy

This tool runs entirely in your browser. No color data or usage is tracked or sent to any server.

Recommended Reading

Learn more about color in design and development:

• Refactoring UI — essential reading for UI design and color
• Design for Hackers — essential reading for color theory for developers
• CSS: The Definitive Guide — essential reading for CSS colors and styling

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Frequently Asked Questions

What is the difference between HEX, RGB, and HSL color formats?

HEX uses a six-character hexadecimal code (e.g., #FF5733), RGB defines colors by red, green, and blue channel values from 0–255, and HSL uses hue (0–360°), saturation, and lightness percentages. All three can represent the same colors — they are just different notations.

How do I convert a HEX color to RGB?

Split the six-digit HEX code into three pairs, then convert each pair from hexadecimal to decimal. For example, #FF5733 becomes R=255, G=87, B=51. Online color pickers perform this conversion instantly.

When should I use HSL instead of HEX or RGB?

HSL is more intuitive for designers because you can adjust lightness or saturation independently without affecting the hue. It makes creating color palettes and hover-state variations much easier than manually tweaking HEX or RGB values.

Can I use an online color picker for accessibility compliance?

A color picker helps you select colors, but you also need a contrast checker to verify WCAG compliance. Look for tools that show the contrast ratio between foreground and background colors to ensure your text meets the minimum 4.5:1 ratio.

References

• MDN — CSS Color Values — Complete reference for CSS color formats including HEX, RGB, and HSL
• W3C — CSS Color Module Level 4 — Official specification for CSS color functions
• Wikipedia — HSL and HSV Color Models — Theory behind hue-saturation-lightness color representation
• MDN — Color Contrast Accessibility — WCAG guidelines for color contrast ratios

Test and debug regular expressions in real time with this free online regex tester. See matches highlighted instantly as you type — no signup, no tracking. Runs 100% in your browser.

How to Use This Regex Tester

1. Enter your regex pattern in the pattern field
2. Set flags (g = global, i = case-insensitive, m = multiline)
3. Paste your test string below
4. Matches appear instantly as you type
5. Use common patterns buttons for quick starts

Regex Quick Reference

• . — any character except newline
• \d — digit (0-9), \w — word char, \s — whitespace
• * — 0 or more, + — 1 or more, ? — 0 or 1
• {n,m} — between n and m occurrences
• [abc] — character class, [^abc] — negated class
• ^ — start of string, $ — end of string
• (group) — capture group, (?:group) — non-capturing
• a|b — alternation (a or b)

Common Regex Flags

• g — Global: find all matches, not just the first
• i — Case-insensitive matching
• m — Multiline: ^ and $ match line boundaries
• s — Dotall: . matches newlines too

Privacy

This regex tester runs entirely in your browser. No data is sent to any server. Safe for testing patterns against sensitive text.

Recommended Reading

Master regular expressions with these essential resources:

• Mastering Regular Expressions — essential reading for learning regex
• Regular Expressions Cookbook — essential reading for regex patterns
• Introducing Regular Expressions — essential reading for getting started with regex

More Free Developer Tools

• Free JSON Formatter & Validator Online
• Free Base64 Encoder & Decoder Online
• Free Hash Generator
• Free URL Encoder & Decoder Online
• Free UUID Generator Online
• Free Word Counter & Text Analyzer Online
• Free Color Picker & Converter Online
• Free CSS Minifier Online

Like these free tools? We build more every week. Follow our AI Tools Telegram channel for weekly picks of the best developer tools, or check out our Market Intelligence channel for AI-powered trading insights.

Frequently Asked Questions

What is a regular expression and when should I use one?

A regular expression (regex) is a pattern-matching syntax used to search, validate, or transform text. Use regex when you need to find complex patterns like email addresses, phone numbers, or specific string formats in your data.

How do I test a regex pattern before using it in production code?

Use an online regex tester to paste your pattern and sample text, then see matches highlighted in real time. This lets you iterate quickly, catch edge cases, and verify capture groups before embedding the regex in your application.

What do common regex symbols like \d, \w, and .* mean?

\d matches any digit (0–9), \w matches any word character (letters, digits, underscore), and .* matches zero or more of any character. These are the building blocks — combine them with quantifiers and anchors to match complex patterns.

Why does my regex match too much or too little text?

Greedy quantifiers like .* match as much text as possible, which often captures more than intended. Switch to lazy quantifiers (.*?) to match the minimum. Also check that you are anchoring with ^ and $ if you want to match the full string.