Sélecteur de Couleur Gratuit en Ligne
Choisissez une couleur et obtenez instantanément ses valeurs HEX, RGB et HSL.
Frequently Asked Questions
How do I pick a color from an image or my screen?
On supported browsers (Chrome, Edge), click the eye-dropper icon to activate screen color sampling — hover over any pixel on screen and click to capture its color. On mobile, upload an image and tap to sample.
What is the difference between HEX, RGB, and HSL color formats?
HEX (#FF5733) is shorthand used in web/CSS. RGB (255, 87, 51) specifies red, green, blue components 0–255. HSL (11°, 100%, 60%) uses hue, saturation, lightness — more intuitive for design adjustments.
What is CMYK and when do I need it?
CMYK (Cyan, Magenta, Yellow, Black) is the color model used in print. If you're sending designs to a printer, ask for CMYK values — screen (RGB/HEX) colors can look different when printed.
How do I find a color's exact shade that passes WCAG contrast requirements?
After picking your color, check the contrast ratio against white (#FFFFFF) and black (#000000). For text, you need ≥4.5:1. Use the accessibility panel shown in the color picker to find compliant shades.
Can I generate a full color palette from one color?
Yes. The tool generates complementary (opposite on wheel), analogous (adjacent), triadic (120° apart), and split-complementary palettes based on your selected color, plus 10 tints and shades.
Is the Sélecteur de Couleur free to use?
Yes, the Sélecteur de Couleur on Allio Tools is completely free with no sign-up or registration required. It works directly in your browser.
How does the Sélecteur de Couleur work?
Choisissez une couleur et obtenez instantanément ses valeurs HEX, RGB et HSL. No data is sent to a server — everything runs locally in your browser for maximum privacy and speed.
Do I need to install anything to use the Sélecteur de Couleur?
No installation needed. The Sélecteur de Couleur runs entirely in your web browser on any device — desktop, tablet, or mobile.
Is my data safe when using the Sélecteur de Couleur?
Completely safe. The Sélecteur de Couleur processes everything locally in your browser. No input data, results, or usage information is ever transmitted to or stored on any server.
Does the Sélecteur de Couleur work offline?
After the page loads for the first time, the Sélecteur de Couleur works without an internet connection for all client-side processing. Tools that fetch live external data (such as DNS or network lookups) require an active connection.
What image formats does the Sélecteur de Couleur support?
The Sélecteur de Couleur works with common image formats supported by your browser, including JPEG, PNG, WebP, and GIF. SVG support varies by tool. No format conversion plugin or driver is needed.
Does the Sélecteur de Couleur work with large image files?
Yes. The Sélecteur de Couleur processes files entirely in your browser using the Canvas API. Very large files (over 20 MB) may take a few extra seconds on older or lower-powered devices. Closing other tabs can free up memory for better performance.
Does the Sélecteur de Couleur work on all browsers?
Yes. The Sélecteur de Couleur is built with standard browser APIs and works on all modern browsers including Chrome, Firefox, Safari, and Edge — on both desktop and mobile. No plugins, extensions, or third-party software are required.
How do I save or export my results from the Sélecteur de Couleur?
Select and copy the result text to paste into any document or app. For image tools, a Download button saves the file directly to your device. Your browser's built-in screenshot function also captures results quickly. No account or login is required.