Every tool is free
Free color & accessibility tools
All 30 Auric Artisan tools in one place: check contrast, simulate color blindness, audit a page, and build palettes, gradients and design systems. The research instruments sit in the Advanced lab group at the end.
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Where most people start
Three tools answer most color questions before a design ships.
Color Contrast Checker
Test text and UI colors against WCAG AA and AAA, and move a failing color to the nearest one that passes.
Color Blindness Simulator
See your design through 78 vision conditions, from every type of color blindness to cataract and glaucoma.
URL Analyzer
Audit a live page for accessibility, contrast and metadata, with each finding pointing at the line that caused it. Needs a free account.
Guides and references
Reference pages for color and accessibility, free to read without an account.
Color reference
Color codes, palettes and conversions
WCAG reference
Accessibility standards and examples
Color contrast
Check, understand and fix contrast
Color spaces
sRGB, Display P3, OKLCH, Lab and conversions
Color converters
Every format, both ways
Accessible UI patterns
Working components with code to copy
Accessibility templates
Audits, statements and issue reports
Accessibility checklist
WCAG checks & guidance
Color vision reference
Color vision types and simulations
Accessibility law
Accessibility requirements by region
Tailwind colors
All families and shades, v4 and v3
RAL colors
RAL Classic color reference
Crayola colors
All 111 crayon colors
Chart palettes
Color-blind-safe palettes for data
Dark UI theme
Every role pair measured
Every tool here is free. Paid plans add conveniences.
Every tool in this collection is free, and all but one work without an account. Two have free allowances: the URL Analyzer (a free account, 20 scans a month) and the Color Blindness Simulator (25 simulations a day). Paid plans lift those caps and add cloud sync, version history, batch runs, API access, and portfolio exports without the small credit line.
- No credit card to start
- Every tool free on every plan
- Cancel anytime · 7-day money-back