RGB to HEX

RGB 和 HEX 都表示相同的顏色訊息，但格式不同。 RGB 使用三個十進制數字 (0-255) 來表示紅、綠、藍三色成分。 HEX 使用六個字元的十六進位字串，其中每對字元以 16 進位 (00-FF) 表示相同的成分。正確渲染時，它們會產生相同的顏色。

HEX is commonly used in CSS and HTML for its compact format and widespread browser support. RGB is useful when you need to dynamically adjust color values with JavaScript, or when working with opacity using the rgba() format. Many developers prefer HEX for static colors and RGB/RGBA for dynamic or semi-transparent colors.

3-character HEX codes are shorthand for 6-character codes where each pair of characters is identical. For example, #F00 is equivalent to #FF0000, and #123 is equivalent to #112233. This shorthand works when both characters in each RGB pair are the same, reducing the code length while maintaining the same color value.

HEX codes can represent the same 16,777,216 colors as 8-bit RGB values (256 × 256 × 256). However, HEX doesn't natively support alpha (transparency) channels, unlike the rgba() format. For transparent colors, you would need to use RGBA or the 8-character HEX format with alpha (#RRGGBBAA) which is supported in modern browsers.

此轉換器在十進位 RGB 值和十六進位表示之間進行精確的數學轉換，確保 8 位元 RGB 色彩空間（值 0-255）的 100% 準確度。轉換具有確定性，這意味著相同的 RGB 輸入始終會產生相同的十六進位輸出，符合 Web 瀏覽器和設計軟體中使用的業界標準。