HEXからRGBへ

HEX is simply a hexadecimal notation for RGB values. Each pair of characters in a HEX code represents the same 0-255 value as in RGB, but in base-16 instead of base-10. For example, #FF0080 translates to RGB(255, 0, 128).

RGB is more readable when you need to understand or manipulate individual color components. It's also required when working with transparency (RGBA). HEX is more compact and commonly used for static color definitions in CSS and design software.

RGB values represent the intensity of red, green, and blue light that combine to create a color. Each value ranges from 0 (no intensity) to 255 (full intensity). When all three are maximum (255), you get white; when all are minimum (0), you get black.

RGBA adds an alpha channel to RGB, representing transparency. The alpha value ranges from 0.0 (fully transparent) to 1.0 (fully opaque). This is useful for creating layered designs where colors need to blend with underlying elements.

色のばらつきは、画面のキャリブレーション、ディスプレイ技術（LCD、OLEDなど）、製造工程の違いによって発生します。HEX値とRGB値は正確ですが、物理的な再現性は異なる場合があります。重要な用途では、色調整を検討してください。