Color palettes, gradients, and accessible UI design
Create harmonious color schemes, verify text readability, generate modern gradients, and copy ready-to-paste CSS code with a single click.
Color & UI Palette Systems
3 toolsWeb Standards & CSS Accessibility
3 toolsRetro Aesthetics & Pixel Art
2 toolsColors, palettes, and visual design tools for your projects
Practical tools to pick harmonious colors, ensure your text is easy to read on any background, and generate modern CSS gradients without heavy software.
Copy color codes directly in HEX, RGB, or Tailwind CSS format with a single click, ready to paste into your website or presentation.
Color Palettes & Photo Extractor
Create harmonious color schemes that look great together or extract the exact dominant colors from any photograph.
Contrast & Text Readability Checker
Check that your website, app, or presentation text is easy to read against any background, following readability guidelines.
Modern CSS Gradients & Favicons
Design smooth background gradients and create all the favicon icon sizes your website needs for mobile and desktop tabs.
Frequently asked questions about the design suite
Designing directly inside your browser lets you preview colors, fonts, and contrast exactly as your visitors will see them on phones and computers, with ready-to-paste CSS code in a single click.
Our contrast checker measures the lighting difference between your text and background color. It tells you clearly if your text passes readability guidelines or if you should make it lighter or darker so anyone can read it comfortably.
Yes. Every tool features a dedicated copy button that formats shades into clean Tailwind CSS configurations or native CSS variables ready to paste into your stylesheet or design software.
No. All operations run strictly inside your local browser memory. CoreBasics never uploads, logs, or stores your color palettes, reference images, or generated styles.