Customize rounded corners and generate clean CSS border-radius code.
Quick, accurate, and completely free to use with zero software installation.
Pick a color visually, paste HEX/RGB/HSL codes, or adjust sliders to configure your design tokens.
Adjust options if desired, then click Generate to run our high-performance processing engine in real time.
Preview and copy or export your processed output immediately. Processing runs 100% inside your web browser.
Reliable, secure, and lightning-fast utilities crafted to streamline your digital workflow effortlessly.
Advanced conversion algorithms preserve crisp fonts, formatting, vector lines, and image details without compromise.
Zero server uploads. Your data is processed entirely in your web browser, ensuring complete privacy and safety.
Processed directly by your device hardware with zero upload delays, queue bottlenecks, or network lag.
100% browser-based. Smoothly handles tasks on Mac, Windows, Linux, Chromebook, iPhone, iPad, and Android.
No hidden account requirements, paywalls, or branded stamps. Clean, professional results ready for immediate use.
Runs smoothly and securely inside your web browser without plugins, extensions, or software downloads.
Comprehensive platform compatibility, security standards, and execution architecture parameters.
Customize rounded corners and generate clean CSS border-radius code.
Visual aesthetics, accessible contrast, and consistent color harmonies define modern digital user interfaces. The Border-Radius Generator provides frontend developers, UI/UX designers, and graphic artists with a precise workspace for color conversion, contrast checking, and CSS code generation.
Verify WCAG 2.1 compliance ratios, translate color values between HEX, RGB, HSL, and CMYK, and copy clean, production-ready CSS stylesheets with one click.
| Specification | Supported Formats / Standards | Standard Reference | Technical Profile |
|---|---|---|---|
| Color Models | HEX (#RGB, #RRGGBB, #RRGGBBAA), RGB/RGBA, HSL/HSLA | CSS Color Module Level 4 | Full dynamic range with alpha transparency channels |
| Contrast Guidelines | WCAG 2.1 AA (4.5:1) & AAA (7:1) Ratios | W3C Accessibility Standards | Evaluates legibility for regular and large text |
| CSS Compatibility | Modern CSS3 Variables & Rules | Cross-browser Standard | Compatible with Chrome, Safari, Firefox, Edge, iOS, Android |
| Execution Environment | Client-side Hardware Acceleration | Canvas API | Instant visual feedback with zero network delay |
Yes. The Border-Radius Generator is 100% free with unlimited conversions, zero watermarks, and no sign-up required.
Our design utilities calculate luminance and contrast ratios based on official W3C WCAG 2.1 specifications to ensure your text colors meet AA (4.5:1) and AAA (7:1) legibility guidelines.
Yes. All output codes are formatted in modern, standard CSS ready to paste directly into your stylesheet, Tailwind configuration, or design system tokens.
Yes. Because the tool runs entirely inside your browser using client-side JavaScript, it continues to function seamlessly without an active Internet connection after loading.
Design smooth CSS box shadows with live visual preview and code copy.
Pick colors from images or screen and inspect values instantly.
Check WCAG text color contrast ratios for web accessibility compliance.
Build keyframe animations visually and export production-ready CSS.
Design modern, responsive call-to-action buttons with custom CSS.
Generate cross-browser CSS gradient code snippets visually.
Create and customize linear or radial color gradients for web design.
Convert color codes effortlessly between HEX, RGB, and HSL formats.
We take feedback very seriously and welcome constructive critique — it directly helps us refine our tools and improve your experience. Whether a tool encountered an issue or you have an idea for an enhancement, please share your honest thoughts with us below!