act-rules · Jym77 · Apr 25, 2024 · Sep 14, 2023 · Sep 14, 2023 · Sep 14, 2023
diff --git a/_rules/text-contrast-afw4f7.md b/_rules/text-contrast-afw4f7.md
@@ -189,6 +189,36 @@ This text is using the default user agent text color and background color. By de
 <div role="button">My button!</div>
 ```
 
+#### Passed Example 12
+
+This 18pt bold black Japanese text has a contrast ratio of 3.6:1 on the gray background.
+
+```html
+<p style="color: #000; font-size:18pt; font-weight:700; background: #666;">
+	中国語、日本語、及び韓国語
+</p>
+```
+
+#### Passed Example 13
+
+This 22pt black Japanese text has a contrast ratio of 3.6:1 on the gray background.
+
+```html
+<p style="color: #000; font-size:22pt; font-weight:700; background: #666;">
+	中国語、日本語、及び韓国語
+</p>
+```
+
+#### Passed Example 14
+
+This 18pt black Japanese text has a contrast ratio of 3.6:1 on the gray background. Since the characters composing the sentence are not included within the Unicode standard range of 4E00–9FFF, it's passing the rule.
+
+```html
+<p style="color: #000; font-size:18pt; background: #666;">
+	「ロック・アンド・ロール」
+</p>
+```
+
 ### Failed
 
 #### Failed Example 1
@@ -304,6 +334,26 @@ This text in a [semantic button][semantic role] has a contrast ratio of 3.85:1.
 <div role="button" style="color: #777; background: #EEE;">My button!</div>
 ```
 
+#### Failed Example 11
+
+This 14pt bold black Japanese text has a contrast ratio of 3.6:1 on the gray background. Since 14pt bold is not [large scale text][] for the Unicode Standard with range 4E00–9FFF, the minimum contrast ratio requirement is 4.5:1.
+
+```html
+<p style="color: #000; font-size:16pt; font-weight:700; background: #666;">
+	中国語、日本語、及び韓国語
+</p>
+```
+
+#### Failed Example 12
+
+This 18pt black Japanese text has a contrast ratio of 3.6:1 on the gray background. Since 18pt is not [large scale text][] for the Unicode Standard with range 4E00–9FFF, the minimum contrast ratio requirement is 4.5:1.
+
+```html
+<p style="color: #000; font-size:18pt; background: #666;">
+	中国語、日本語、及び韓国語
+</p>
+```
+
 ### Inapplicable
 
 #### Inapplicable Example 1

diff --git a/_rules/text-contrast-enhanced-09o5cg.md b/_rules/text-contrast-enhanced-09o5cg.md
@@ -183,6 +183,36 @@ This text is using the default user agent text color and background color. By de
 <div role="button">My button!</div>
 ```
 
+#### Passed Example 11
+
+This 18pt bold black Japanese text has a contrast ratio of 4.6:1 on the gray background.
+
+```html
+<p style="color: #000; font-size:18pt; font-weight:700; background: #777;">
+	中国語、日本語、及び韓国語
+</p>
+```
+
+#### Passed Example 12
+
+This 22pt black Japanese text has a contrast ratio of 4.6:1 on the gray background.
+
+```html
+<p style="color: #000; font-size:22pt; background: #777;">
+	中国語、日本語、及び韓国語
+</p>
+```
+
+#### Passed Example 13
+
+This 18pt black Japanese text has a contrast ratio of 4.6:1 on the gray background. Since the characters composing the sentence are not included within the Unicode standard range of 4E00–9FFF, it's passing the rule.
+
+```html
+<p style="color: #000; font-size:18pt; background: #777;">
+	「ロック・アンド・ロール」
+</p>
+```
+
 ### Failed
 
 #### Failed Example 1
@@ -328,6 +358,26 @@ This text in a [semantic button][semantic role] has a contrast ratio of 6.4:1.
 <div role="button" style="color: #555; background: #EEE;">My button!</div>
 ```
 
+#### Failed Example 14
+
+This 16pt bold black Japanese text has a contrast ratio of 4.6:1 on the gray background. Since 14pt bold is not [large scale text][] for the Unicode Standard with range 4E00–9FFF, the minimum contrast ratio requirement is 7:1.
+
+```html
+<p style="color: #000; font-size:14pt; font-weight:700; background: #666;">
+	中国語、日本語、及び韓国語
+</p>
+```
+
+#### Failed Example 15
+
+This 20pt black Japanese text has a contrast ratio of 4.6:1 on the gray background. Since 18pt is not [large scale text][] for the Unicode Standard with range 4E00–9FFF, the minimum contrast ratio requirement is 7:1.
+
+```html
+<p style="color: #000; font-size:18pt; background: #666;">
+	中国語、日本語、及び韓国語
+</p>
+```
+
 ### Inapplicable
 
 #### Inapplicable Example 1

diff --git a/pages/glossary/large-scale-text.md b/pages/glossary/large-scale-text.md
@@ -12,3 +12,18 @@ Text nodes with a [computed](https://www.w3.org/TR/css-cascade-3/#computed-value
 
 - at least 18 [points](https://www.w3.org/TR/css-values/#pt), or
 - at least 14 [points](https://www.w3.org/TR/css-values/#pt) and a [computed](https://www.w3.org/TR/css-cascade-3/#computed-value) [font weight](https://www.w3.org/TR/css-fonts-3/#font-weight-prop) CSS property of 700 or higher.
+
+For CJK (Chinese, Japanese and Korean) characters with a [computed](https://www.w3.org/TR/css-cascade-3/#computed-value) [font-size](https://www.w3.org/TR/css-fonts-3/#propdef-font-size) of: 
-For CJK (Chinese, Japanese and Korean) characters with a [computed](https://www.w3.org/TR/css-cascade-3/#computed-value) [font-size](https://www.w3.org/TR/css-fonts-3/#propdef-font-size) of: 
+For CJK (Chinese, Japanese and Korean) characters within text nodes, a [computed](https://www.w3.org/TR/css-cascade-3/#computed-value) [font-size](https://www.w3.org/TR/css-fonts-3/#propdef-font-size) of: 
-For CJK (Chinese, Japanese and Korean) characters with a [computed](https://www.w3.org/TR/css-cascade-3/#computed-value) [font-size](https://www.w3.org/TR/css-fonts-3/#propdef-font-size) of: 
+For CJK (Chinese, Japanese and Korean) characters within text nodes, a [computed](https://www.w3.org/TR/css-cascade-3/#computed-value) [font-size](https://www.w3.org/TR/css-fonts-3/#propdef-font-size) of: 
+- at least 22 [points](https://www.w3.org/TR/css-values/#pt), or
+- at least 18 [points](https://www.w3.org/TR/css-values/#pt) and a [computed](https://www.w3.org/TR/css-cascade-3/#computed-value) [font weight](https://www.w3.org/TR/css-fonts-3/#font-weight-prop) CSS property of 700 or higher.
+
+**Notes:**  
+The WCAG definition of [large scale text](https://www.w3.org/TR/WCAG21/#dfn-large-scale) lacks clarity regarding the equivalent [font-size](https://www.w3.org/TR/css-fonts-3/#propdef-font-size) for CJK characters. According to WCAG:  
+>[large scale (text)](https://www.w3.org/TR/WCAG21/#dfn-large-scale): with at least 18 point or 14 point bold or font size that would yield equivalent size for Chinese, Japanese and Korean (CJK) fonts
+
+Since there is no official WCAG definition of **equivalent size** for CJK characters, we rely on the guidelines provided in the [Japanese translation of the WCAG 2.1](https://waic.jp/translations/WCAG21/#dfn-large-scale). This document offers the following insight (translated from Japanese to English to allow everyone understanding the specs):  
+
+>TRANSLATION NOTE  
+>In the case of Japanese full-width characters, 22 point or 18 point bold type is considered to be the "equivalent" size, based on the First Report of the Enlarged Textbook Promotion Council, "Chapter 2 Standards for Enlarged Textbooks." is reasonable."
+
+Assuming all CJK characters pose similar contrast challanges, this definition extends the Japanese requirement to the whole CJK characters set included in the [Unicode standard](https://unicode.org/charts/PDF/U4E00.pdf) within the range of 4E00–9FFF.