Color Luminance Curve Editor
Edit color luminance curve with a live preview and one-click copy, nothing uploaded.
Edit color luminance curve, interactively
Edit color luminance curve without leaving the page or wiring up a build step. Change the inputs and the preview updates immediately, so you can dial in exactly what you want and copy the result straight into your project.
Private and in your browser
Everything runs locally in your browser. Your input is never uploaded and no account is required, so the tool stays fast and works even offline. The copy and download buttons always use the current result shown in the output panel.
Frequently Asked Questions
What does the Color Luminance Curve Editor do?
You adjust the inputs, it renders color luminance curve in real time, and you copy the result. No build step, no account, no waiting.
Does it send my data anywhere?
No. The Color Luminance Curve Editor runs entirely in your browser — your input is never uploaded, and it keeps working offline once the page has loaded.
What should I keep in mind?
Confirm the colors meet WCAG contrast for any text use; a good-looking palette is not automatically accessible.
Practical utilities for front-end design and implementation work.