1. PerceivableLevel AA
1.4.3 Contrast (Minimum)
명도 대비(최소)
Summary
Body text needs at least 4.5:1 contrast against its background; large text (18pt, or bold 14pt and up) needs 3:1. The test is whether low-vision users — and anyone on a screen in bright sunlight — can still read it. Logos and disabled controls are exempt.
Common failures
- Light gray helper text (around `#999`) on white, landing below even 3:1.
- Overlaying text on an image without checking contrast across the image's lighter regions.
Corresponding KWCAG 2.2 items
- 5.4.1 Contrast of Text Content