Penyemak kontras warna
Semak kontras warna
Berjalan dalam pelayar anda · Tiada muat naik
Alat ini dan arahan di halaman ini dalam bahasa Inggeris buat masa ini. Ia berfungsi dengan cara yang sama: semuanya berjalan dalam pelayar anda.
Large text: The quick brown fox
Normal text: The quick brown fox jumps over the lazy dog. 0123456789
Button outline| Use | WCAG AA | WCAG AAA |
|---|---|---|
| Normal text (below 24 px, or below 18.66 px bold) | ||
| Large text (24 px and up, or 18.66 px bold) | ||
| Icons, borders and form fields | – |
Suggested text colors
The nearest colors with the same hue that pass. Click one to use it.
Pelayar anda terlalu lama untuk menjalankan alat ini. Sila kemas kininya, atau gunakan versi semasa Chrome, Edge, Firefox atau Safari.
- Tiada apa-apa meninggalkan peranti anda
- Tiada had saiz daripada pelayan
- Tiada pendaftaran, tiada tera air
- Percuma
How to check color contrast
- Enter the text color and the background color, or pick them.
- Read the contrast ratio and the pass or fail results for normal text, large text and interface parts.
- If it fails, click a suggested color: the nearest shade that passes.
The WCAG requirements
| Use | AA | AAA |
|---|---|---|
| Normal text | 4.5 : 1 | 7 : 1 |
| Large text (24 px, or 18.66 px bold) | 3 : 1 | 4.5 : 1 |
| Icons, borders, form fields | 3 : 1 | – |
Good to know
- The ratio is calculated with the WCAG 2 formula and compared without rounding, so 4.49 : 1 fails AA.
- See-through text colors are blended with the background first, as browsers draw them.
- Passing the ratio is required but not everything: font weight, size and thin lines also affect readability.
Soalan lazim
What contrast ratio do I need?
For most text, at least 4.5 : 1 (WCAG AA). Large text needs 3 : 1. AAA asks for 7 : 1.
How are the suggestions made?
The text color keeps its hue and saturation and is made lighter or darker until it reaches the target ratio.
Is this APCA / WCAG 3?
No. It uses WCAG 2.1 and 2.2, which is what most laws and guidelines refer to today.