Key takeaways
- Coolors and Adobe Color cover nearly every palette need: generation, harmony rules, image extraction, and export.
- Working palettes are small — three to five colors with clear roles: primary, neutrals, one accent.
- Always check text/background contrast against accessibility targets (4.5:1 for body text) before finalizing a palette.
The best color palette generators are Coolors for fast generation and Adobe Color for image extraction and harmony-rule work — both free, both browser-based, and together they cover everything from "give me five colors that work" to "check whether this text is readable." A palette tool is only half the job, though: knowing how many colors a design actually needs, and how to check them for accessibility, is what turns a generated scheme into a usable brand palette. Here's the toolkit and the workflow.
The tools, by what they're best at
| Tool | Best at | Image-to-palette | Contrast checking | Cost |
|---|---|---|---|---|
| Coolors Freemium | Rapid generation — spacebar to shuffle, lock what you like | Yes | Built-in checker | Free core; paid extras |
| Adobe Color Free | Harmony rules (complementary, triadic…) and photo extraction | Yes, excellent | Accessibility tools included | Free |
| Canva color palette generator Freemium | Photo-to-palette inside a tool you already design in | Yes | Limited | Free features included |
| WebAIM Contrast Checker Free | Definitive WCAG contrast pass/fail for any two colors | — | Yes, dedicated | Free |
A practical palette workflow
- Start from something real. A brand photo, a product color, or an existing logo — extract a palette from it with Adobe Color or Canva's generator rather than starting from abstract wheels.
- Refine with a generator. Drop your anchor color into Coolors, lock it, and shuffle the rest until the scheme feels right. Use harmony rules in Adobe Color if you want a principled structure (analogous for calm, complementary for energy).
- Assign roles, not just colors. Pick which color is dominant, which are the background/text neutrals, and which single accent handles buttons and highlights. A palette without roles is just five nice colors.
- Check accessibility. Run your intended text/background pairs through a contrast checker: 4.5:1 for body text, 3:1 for large headings (WCAG AA). Fix lightness, not hue, to pass — the palette's character survives.
- Record the hex codes. Write them down with their roles and paste the exact codes into every design tool. Consistency is manual discipline, and it's what makes a brand look like a brand.
Image-to-palette: the underrated feature
Extracting a palette from a photo is the fastest route to a scheme that feels cohesive, because nature and photography already solved the harmony problem. Upload a hero image to Adobe Color or Coolors and it pulls a five-color scheme from the pixels; adjust the pick points to capture the mood you want. This works especially well when graphics must sit alongside brand photography — the poster or social post inherits colors that already appear in the photo, so the composite looks designed rather than assembled. Our poster guide uses this exact trick for photo-led layouts.
Accessibility: the step everyone skips
Beautiful palettes fail in production when text is unreadable. The WCAG contrast targets exist because low-contrast text genuinely excludes readers — and affects everyone on a dim phone screen in sunlight. The good news: fixing contrast rarely means abandoning a palette. Darkening a background shade or brightening an accent keeps the character while passing the 4.5:1 body-text bar. Coolors flags issues in the palette view; WebAIM's checker gives an authoritative pass/fail for any pair. If your text sits on a photo, put a tinted overlay behind it rather than hoping the colors work everywhere in the image — the font pairing guide covers the readability side of the same problem.
Color is one leg of the visual tripod, alongside type and imagery. For the others, see our guides to font pairing tools and free stock photo sites, and the full design tools landscape.
Official resources
- Coolors — official site
- Adobe Color — official site
- WebAIM Contrast Checker — official tool
- Canva Color Palette Generator — official page
Related MFA Tools articles
- Best font pairing tools
- Best free logo makers for small brands
- Best design tools for non-designers
- Free vs paid design tools
Frequently asked questions
What is the best free color palette generator?
Coolors is the most popular for good reason: press the spacebar to generate five-color schemes, lock colors you like, adjust with real color theory tools, and export in every format. Adobe Color is the strongest alternative, especially for extracting palettes from images and working with harmony rules.
How many colors should a design palette have?
Three to five: one dominant primary, one or two supporting neutrals, and one accent for calls to action and highlights. More colors than that dilutes the design and makes consistency across pages and graphics nearly impossible.
How do I check if my colors are accessible?
Check the contrast ratio between text and background with a contrast checker — 4.5:1 is the WCAG AA target for normal body text and 3:1 for large text. Coolors and Adobe Color have built-in checkers, and standalone tools like WebAIM's let you test any two colors free.
Can I extract a color palette from a photo?
Yes. Adobe Color and Coolors both let you upload an image and extract a palette from it — useful for matching graphics to brand photography or building a scheme around a hero image. Tools like Canva can also suggest palettes from uploaded photos.
How do I keep colors consistent across all my graphics?
Write the hex codes down — that sounds trivial, but it's the whole system. Pick your palette once, record the hex values, and paste those exact codes into every tool you use. In Canva, a Pro brand kit stores them for one-click access; on free plans, keep the codes in a note and enter them manually.