🔧 TL3 Tools

About These CSS & Design Tools

Writing CSS by hand is fine until you need to visualize a gradient angle, dial in the exact blur on a box shadow, or figure out why two colors look great together on one screen and terrible on another. That's where these tools come in. Each one strips away the guesswork by letting you adjust values with sliders, color pickers, and numeric inputs, then immediately see the result rendered in your browser. Copy the finished CSS straight into your project, and you're done.

The collection covers the everyday building blocks of modern web styling. Gradients, shadows, border radius, color palettes, color format conversion, contrast checking, and aspect ratio calculation. No installation, no account, no ads tracking your visits across the web. Open a tool, do your work, and move on.

How to Choose the Right Tool

• CSS Gradient Generator: Pick this when you need a linear or radial gradient for a background, button, or overlay. Drag the angle, add color stops, and preview the result against your actual layout before copying the CSS.
• CSS Box Shadow Generator: Use this for card effects, hover states, or anything that needs depth. You control offset, blur radius, spread, and shadow color independently, so you can match the soft-shadow trend or build something more dramatic.
• CSS Border Radius Generator: Perfect for creating asymmetric rounded corners or matching a design mockup exactly. Set each corner individually or lock them together for uniform rounding.
• Color Palette Generator: Start here when you need a cohesive set of colors for a new project. The generator applies color theory principles (complementary, analogous, triadic, and more) to produce palettes that work together naturally.
• Color Converter: Switch between HEX, RGB, HSL, and named CSS colors in one step. Handy when a design tool exports one format and your stylesheet expects another.
• Color Contrast Checker: Test any foreground-background pair against WCAG AA and AAA accessibility standards. This catches readability problems before they reach production.
• Aspect Ratio Calculator: Enter one dimension and a target ratio to find the other. Useful for responsive images, video embeds, and responsive grid layouts.

Who Benefits From These Tools

• Frontend developers who want to prototype CSS values quickly without switching to a full design application or guessing numbers in a text editor.
• UI/UX designers building mockups or handing off specs to developers, especially when they need exact color codes or shadow values that translate directly into CSS.
• Students and bootcamp grads learning web development who benefit from seeing how changing a gradient angle or shadow spread affects the visual output in real time.
• Content creators and bloggers building custom WordPress themes or styling newsletters who need polished visuals without deep CSS knowledge.
• Freelancers and small agency teams who juggle multiple projects and want fast, reliable tools for everyday styling tasks without paying for a design suite.

Privacy and Performance

Every tool on this page runs entirely in your browser using client-side JavaScript. No color values, gradients, or design parameters are ever sent to a server. There are no accounts to create and no data to store, so your work stays on your machine. The pages are lightweight and load fast, with no heavy frameworks or external dependencies dragging down performance. Whether you're on a desktop workstation or a phone with a slow connection, the tools respond quickly because all the computation happens locally.