Which contrast ratio do I need to pass WCAG AA?
Normal text requires a 4.5:1 ratio; large text (18pt+ or 14pt bold) requires 3:1. The WCAG Color Contrast checker shows both thresholds and your pass/fail status instantly.
Coleção
Design & Color Tools
Check color contrast ratios for WCAG compliance, simulate color blindness, and calculate aspect ratios — free design helpers that run entirely in your browser.
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Accessible and well-proportioned visuals start with the right numbers. This collection groups the TeaFun tools that designers, developers, and content creators use to check color accessibility, simulate vision conditions, and lock in correct proportions.
Casos de uso comuns
- Verify foreground and background color combinations meet WCAG AA and AAA contrast standards.
- Preview how your palette looks to users with protanopia, deuteranopia, or other color vision differences.
- Calculate and lock in the correct aspect ratio when cropping images or sizing video embeds.
Ferramentas em destaque
Paleta de Cores + Verificador WCAG
Verifique proporções de contraste, conformidade AA/AAA, gere variantes de paleta e exporte tokens de cor CSS ou Tailwind v4 localmente.
Teste de daltonismo
Teste sua visão cromática com placas no estilo Ishihara otimizadas para gamers.
Calculadora de Proporcao
Calcule proporcoes de imagem instantaneamente. Converta dimensoes, resolva lados ausentes e consulte tamanhos de imagens para redes sociais 2025/2026.
Perguntas Frequentes
How does the color blindness simulator work?
It applies standard daltonisation matrices to the input colors to approximate how they appear with different types of color vision deficiency — all computed locally in your browser.