- What is RGBA and how does it differ from RGB?
- RGBA adds a fourth channel — alpha — to the standard RGB red, green, and blue channels. Alpha controls transparency: 0 is fully transparent, 1 is fully opaque. It is used in CSS wherever you need a semi-transparent color, such as rgba(99, 102, 241, 0.5) for 50% opacity.
- How do I get the RGBA value with a specific opacity from a HEX code?
- Paste your HEX code into the input. The tool outputs the RGBA value with alpha set to 1 (fully opaque). To use a different opacity, copy the rgba() value and change the last number to your desired alpha between 0 and 1.
- Does this only accept HEX input?
- No. You can paste any CSS color format: HEX, RGB, RGBA, HSL, HSLA, or a named color. All six output formats are shown at once — HEX, HEX with alpha, RGB, RGBA, HSL, and HSLA.
- What is the 8-digit HEX with alpha?
- An 8-digit HEX code appends two extra digits to the standard 6-digit code to encode the alpha channel. For example, #6366F180 represents the color #6366F1 at roughly 50% opacity. This format is supported in modern CSS and design tools.