Convertisseur de Couleurs Universel (HEX, RGB, HSL, OKLCH, CMYK)
Web Legacy
Web Modern
Design & Print
Native Code
Accessibility Diagnostic (WCAG)
Variations
Guide & Explanations
The Ultimate Color Converter for Web Professionals
Handling and converting color formats can quickly become a headache when juggling between UI/UX mockups, front-end code, and print specifications. Our Universal Color Converter solves this problem by unifying all industry standards into a single, smart, and ultra-fast interface.
Thanks to our "Zero-Click" automatic detection engine, you no longer even need to specify the starting format. Just paste your value (whether it's a classic HEX #3B82F6, an RGB code rgb(59, 130, 246), or a CMYK print profile) and the tool takes care of the rest.
Embrace Modern Web Colors: OKLCH and LCH
The web is evolving towards wide-gamut displays (Display P3) that can show hues 50% more saturated and vibrant than the classic sRGB standard. This is where OKLCH and LCH formats (introduced with CSS Color Level 4) come into play.
Unlike classic HSL, OKLCH is perceptually uniform. This means that if you change the lightness (L) of a hue, its apparent color won't shift (no shifting to yellow or blue like in HSL). Our converter allows you to adopt these new standards instantly to make your interfaces compatible with next-generation screens.
Guaranteed Accessibility (WCAG 2.1)
A beautiful color is useless if your text is unreadable. Web accessibility is now an essential standard (and often a legal requirement). Our converter includes a diagnostic module that automatically calculates the WCAG contrast ratio of the chosen color against both black and white text.
At a glance, you know if your palette passes the AA (ratio of 4.5:1) accessibility levels or the gold standard AAA (ratio of 7.0:1). In addition, our algorithm automatically generates harmonious variations (complementary hue, lighter, darker) to inspire you in building your brand guidelines.
Frequently Asked Questions
Q: Is Convertisseur de Couleurs Universel (HEX, RGB, HSL, OKLCH, CMYK) free to use?
R: Yes, the Convertisseur de Couleurs Universel (HEX, RGB, HSL, OKLCH, CMYK) utility is 100% free. All tools on Dolf.in are accessible at no cost and without intrusive ads.
Q: Is my data secure?
R: Absolutely. Dolf.in uses a 'Serverless' approach: your data is processed locally in your browser and is never sent to our servers.
Q: Do I need to install any software?
R: No, no download or installation is required. Everything works directly in your web browser.
Q: What color formats are supported by the converter?
R: Our tool supports input and conversion to HEX (6/8 characters), RGB, RGBA, HSL, HSLA, OKLCH, LCH, HSV, CMYK, Android ARGB, and Swift UIColor.
Q: What is the OKLCH format?
R: OKLCH is a modern color space (W3C Color Level 4) designed to be perceptually uniform. Unlike HSL, it allows you to change saturation or hue without altering perceived lightness, and it supports the Display P3 color gamut.