Pemeriksa Kontras (WCAG)
Pemeriksa kontras WCAG gratis. Periksa kontras antara dua warna apa pun — lihat lulus/gagal AA/AAA untuk teks normal dan besar. Untuk desain yang mudah diakses dan a11y.
Runs in your browserUpdated Apr 26, 2026
Contrast checker (WCAG)
The quick brown fox
jumps over the lazy dog · 14px sample
Ratio
17.85:1
AA · normal
Pass
AA · large
Pass
AAA · normal
Pass
AAA · large
Pass
Pertanyaan yang sering diajukan
›What WCAG levels are checked?
Both AA and AAA, for normal text (≤17pt) and large text (≥18pt or ≥14pt bold).
›What ratio do I need?
AA: 4.5:1 normal, 3:1 large. AAA: 7:1 normal, 4.5:1 large. Most public sites target AA at minimum.
›How is contrast calculated?
Per WCAG 2.x: relative luminance of each color, then (lighter + 0.05) / (darker + 0.05). The result is a ratio from 1:1 (no contrast) to 21:1 (max).
›What about WCAG 3 / APCA?
Currently we use WCAG 2 ratios — the official standard for AA/AAA conformance. WCAG 3 / APCA is still a draft.
›Is the checker free?
Yes — fully free, no signup.