カラーコンバーター | Fairmont AI

無料カラーコンバーター。

Easily convert colors between HEX, RGB, and HSL formats with our free online color converter tool. Whether you are a web developer writing CSS, a graphic designer matching brand colors, or a UI/UX professional fine-tuning your palette, this tool makes color conversion fast and effortless. Simply enter a color value in any supported format or use the built-in color picker to select your desired shade. All color values update in real time, so you can instantly see the equivalent HEX code, RGB values, and HSL percentages. Copy any format to your clipboard with a single click. No registration, no downloads, and completely free to use on any device.

How to Convert Colors Online

  1. Enter a Color Value or Use the Picker: Type a HEX code, RGB values, or HSL values into the corresponding input fields, or use the built-in color picker to visually select any color you like.
  2. View All Color Formats: As soon as you enter or pick a color, the tool instantly calculates and displays the equivalent values in HEX, RGB, and HSL formats, along with a live color preview.
  3. Copy the Format You Need: Click the copy button next to any color format to copy the value to your clipboard, ready to paste directly into your CSS, design tool, or any application.

Frequently Asked Questions

What is the difference between HEX, RGB, and HSL?

HEX is a six-character hexadecimal representation of color commonly used in HTML and CSS (e.g., #3b82f6). RGB defines a color by its Red, Green, and Blue channel values from 0 to 255. HSL represents color using Hue (0-360 degrees), Saturation (0-100%), and Lightness (0-100%), making it more intuitive for adjusting shades and tints.

When should I use HEX vs RGB vs HSL in CSS?

HEX is the most compact and widely used format in CSS. RGB is useful when you need to apply alpha transparency using rgba(). HSL is ideal when you want to programmatically adjust lightness or saturation, such as generating color palettes or creating hover states with slightly lighter or darker variants.

What is HSL and why is it useful?

HSL stands for Hue, Saturation, and Lightness. It is a more human-friendly color model because adjusting lightness or saturation is straightforward. For example, you can easily create a darker shade by reducing the lightness value without affecting the overall hue of the color.

Can I use this tool on mobile devices?

Yes, our color converter is fully responsive and works on smartphones, tablets, and desktop computers. The color picker and input fields adapt to any screen size for a smooth experience.

Are the converted color values accurate?

Absolutely. Our converter uses precise mathematical formulas to ensure lossless conversion between HEX, RGB, and HSL. The values generated are identical to those produced by professional design and development tools.

Is this color converter free to use?

Yes, this tool is completely free with no registration, no ads, and no usage limits. You can convert as many colors as you need, as often as you like.