"Accessible means boring." Wrong.

It means thoughtful. High contrast doesn't mean black and white. It means your ink on your background passes 4.5:1. That leaves a massive design space to work in.

The constraint isn't "make it ugly so everyone can use it." The constraint is "make it readable." Those are very different problems. Readable palettes can be warm, cool, bold, muted, vintage, futuristic — whatever you want. They just need to pass the math.

Paletter does the math. You do the design.

Every palette ships with validation

Contrast ratios

Every meaningful color pair scored against WCAG AA (4.5:1) and AAA (7:1). Badges show pass/fail at a glance.

Color blindness simulation

Preview through protanopia, deuteranopia, and tritanopia filters. See what 8% of your male users see.

Role-appropriate contrast

Ink on background must hit 4.5:1 minimum. Accent on background must hit 3:1 for large text. Each role has its own threshold.

No account needed

Contrast checker

Test any two colors instantly. AA and AAA scores. Large text and normal text thresholds. Free, no account needed.

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Color blindness preview

Every generated palette includes protanopia, deuteranopia, and tritanopia simulations. See before you ship.

Grayscale ramp

Verify luminance hierarchy. If your palette works in grayscale, it works for everyone.

You get accessible palettes without trying

Paletter's generation engine validates contrast during generation. Not after. Not as a separate step. During.

If ink-on-background doesn't pass WCAG AA, the ink darkens automatically. If accent-on-background fails the large text threshold, the accent shifts. You never see the broken version.

The result: every palette that comes out of Paletter meets minimum accessibility standards. You can push further toward AAA if you want. But AA is the floor, not the ceiling.

Generate an accessible palette

WCAG validated. Color blindness tested. Beautiful by default.