Merge pull request #216 from COSCUP/yoyo930021/add_colorblind_friendl…

…y_guide

Add colorblind friendly Presentations in speak guide

docs_dev/docs/about_coscup/how_to_participate/as_speaker.md

@@ -89,6 +89,13 @@ If you cannot find a suitable track for submission, it is recommended to prepare
 
 As COSCUP sees increasing participation from international partners, it is suggested to present your slides in English content. Even if you deliver your presentation in Chinese or any other language on-site, presenting in English can lower the participation barrier for international partners. Of course, we also highly encourage setting a personal challenge to present in English. **COSCUP is just a small stage for practice, hoping to provide you with opportunities to speak at international conferences in the future!**
 
+#### General Guidelines for Colorblind-Friendly Presentations
+
+1. Use High Contrast: Ensure there is a high contrast or high light-dark contrast between text and background. Avoid using light text on a light background or dark text on a dark background.
+2. Avoid Reliance on Color Alone: Distinguish content by using separators and borders between color blocks. In addition to colors, utilize lines, patterns, shapes, or text to convey information.
+3. Use Colorblind-Friendly Palettes: Implement color schemes that are distinguishable for individuals with colorblindness. Tools such as [ColorBrewer](https://colorbrewer2.org/#type=sequential&scheme=BuGn&n=3) can assist in selecting these palettes, or you can refer to the [Color Universal Design (CUD) recommended color set](https://cudo.jp/?page_id=1565).
+4. Test Your Presentation: Employ tools and simulators such as [Color Oracle Overview](https://colororacle.org/) or [ColorShark](https://colorshark.io/) to ensure your materials are accessible to individuals with colourblindness.
+
 ## Information Related to 2024
 
 - Submit your proposal: <https://pretalx.coscup.org/coscup-2024/>

docs_dev/docs/about_coscup/how_to_participate/as_speaker.zh-TW.md

@@ -89,6 +89,13 @@ comments: true
 
 由於 COSCUP 越來越多海外夥伴的參與，建議可以將簡報以英文內容呈現，即使現場使用中文或任何語言來發表也較可降低海外夥伴的參與門檻。當然我們也非常鼓勵可以設定自我挑戰使用英語來發表，**COSCUP 只是一個小小舞台練習，希望能幫助你有機會站上國際研討會發表！**
 
+#### 色盲色弱友善簡報基本設計指南
+
+1. 使用高對比度配色：確保文字和背景之間有高對比度或是高明暗對比，避免使用淺色文字配淺色背景或深色文字配深色背景。
+2. 避免僅依賴顏色標示內容：在色塊之間可以用分隔線和外框幫助區分內容。除了使用顏色外，善用線條、圖案、形狀或文字來傳達資訊。
+3. 使用色盲色弱友善的配色方案：採用對色覺障礙者來說易於區分的配色方案，像 [ColorBrewer](https://colorbrewer2.org/#type=sequential&scheme=BuGn&n=3) 這樣的工具可以幫助選擇配色，或是參考[色彩通用設計推薦配色表](https://cudo.jp/?page_id=1565)。
+4. 檢查你的簡報內容：使用例如 [Color Oracle Overview](https://colororacle.org/)、[ColorShark](https://colorshark.io/) 等工具和模擬器來確認你的簡報對色覺障礙者的顯示效果。
+
 ## 與 2024 相關的資訊
 
 - 提交稿件：<https://pretalx.coscup.org/coscup-2024/>