Practical color tool

Color Blindness Simulator

Preview palettes for deuteranopia, protanopia and tritanopia to catch risky color combinations before shipping.

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What this page gives you

  • Use the home preview to compare normal and simulated palette strips.
  • Avoid relying on color alone for success, warning or error states.
  • Pair accessible contrast with labels, icons and state text.

Good for

  • Accessible palettes
  • Charts
  • Status colors

How to use it

Palette generatorGenerate accessible color palettes, export CSS, Tailwind, SCSS, JSON, SVG and PNG palette assets, check WCAG contrast and extract colors from images locally.WCAG checkerCheck whether text and background colors meet WCAG AA and AAA contrast ratios. Free, instant, no upload required.Image extractorExtract a dominant color palette from PNG, JPG or WebP images. Processed locally in your browser — nothing uploaded.
Can I use this with the main generator?

Yes. Start from this page, then open the main Chromoforge tool with the same base color and export the palette.

Which types of color vision deficiency are simulated?

The three dichromacies: protanopia (no working long-wavelength cones), deuteranopia (no medium-wavelength cones) and tritanopia (no short-wavelength cones). Red-green deficiencies are by far the most common, affecting roughly 8% of men and 0.5% of women of northern European descent.

Is a simulation enough to call a palette accessible?

No. A simulation shows where hue separation collapses, but it says nothing about contrast ratios and it does not cover anomalous trichromacy or low vision. Pair it with a contrast check and make sure no state, series or status depends on hue alone.