Color Converter

Color Formats Explained

HEX (hexadecimal) represents colors as a 6-digit code prefixed with #, where each pair of digits represents red, green, and blue intensity from 00 to FF (0-255 in decimal). It's the most common format in CSS and HTML due to its compactness. RGB (Red, Green, Blue) expresses the same information as three decimal numbers from 0-255, which some find more intuitive to read and adjust manually than hexadecimal. HSL (Hue, Saturation, Lightness) represents color differently — as a position on the color wheel (hue, 0-360°), how vivid the color is (saturation, 0-100%), and how light or dark it is (lightness, 0-100%). HSL is often preferred by designers because adjusting lightness or saturation while keeping hue fixed is far more intuitive than working out the equivalent RGB or hex values.

When to Use Each Format

Use HEX for concise CSS color declarations and when copying colors from design tools like Figma or Photoshop, which typically display hex codes by default. Use RGB when you need to apply transparency via the related rgba() format, or when working with graphics libraries that expect numeric RGB triplets. Use HSL when you need to programmatically generate color variations — for example, creating a lighter or darker shade of a brand color by adjusting only the lightness value while keeping hue and saturation constant, which is far harder to do correctly by eye in RGB or hex.

Frequently Asked Questions

Why do some hex codes have 8 digits instead of 6?

An 8-digit hex code includes an alpha (transparency) channel as the final two digits — for example, #2563EBCC represents the same blue at roughly 80% opacity. This is equivalent to using rgba() or hsla() with an explicit alpha value.

How do I pick a color visually rather than typing values?

Use the color swatch picker at the top of the tool — clicking it opens your browser or operating system's native color picker, letting you visually select a color which then automatically populates all three format fields.

Are HEX, RGB, and HSL always perfectly interchangeable?

Yes, for standard sRGB colors (the default color space for web and most digital design), these three formats represent exactly the same underlying color with no loss of precision — they're just different mathematical representations of the same red/green/blue values.