Coolors vs HTMLColorCodes vs DesignMatrix
If you are looking for a Coolors alternative for colors, palettes and CSS generation: a full pipeline: convert, contrast-check, harmonize, then export CSS and Tailwind locally.
Honest comparison below — price, signup, uploads, queues, offline and ads — plus three tools to start right now.
Honest comparison
| DesignMatrix | Coolors | HTMLColorCodes | |
|---|---|---|---|
| Price | Free — all 25 tools | Free tier, premium upsells | Free tier, premium upsells |
| Your inputs | Typed here, computed locally — nothing sent | Entered on their ad-supported pages | Entered on their ad-supported pages |
| Signup | Never required | Needed for higher limits and history | Needed for higher limits and history |
| Queues and limits | None — instant results | Limits and queues on the free tier | Limits and queues on the free tier |
| Works offline | Yes, after the first load | No | No |
| Ads | Clearly labeled, never blocking the tools | Ad-supported pages | Ad-supported pages |
Switch in 3 steps
- Pick a tool from the list below.
- Do your task (colors, palettes and CSS generation) right in the page.
- Download or copy the result — nothing is uploaded.
Start with these
Content continues below
FAQ
Is DesignMatrix really free?
Yes. All 25 colors, palettes and CSS generation tools are free with no signup, no credits and no watermarks. Clearly labeled ads keep the lights on — they never sit next to download buttons.
Is what I enter into DesignMatrix sent anywhere?
No. Everything computes inside the page on your device. Close the tab and it is gone.
What are the limits?
No artificial limits: no task counters, no daily quotas, no accounts.
Why is DesignMatrix faster than Coolors?
No uploads, no queues, no page reloads: your device does the work instantly instead of waiting on someone else's server.