RGB to RGBA
Convert RGB to RGBA. See worked examples, understand the conversion method, and check practical limits before using your result. Check the format first.
RGB to RGBA color conversion
Use RGB to RGBA when a design specification, stylesheet, or color editor needs a different representation of the same color. Start hexadecimal input with #, or use a lowercase rgb, rgba, hsl, hsla, or hsv function name. Select Submit, then check the target-format result before copying it.
How this conversion works
Use the red, green, and blue channel values as the starting point. Normalize the color channels by dividing by 255 when a destination formula expects values between 0 and 1. RGBA output includes the RGB coordinates and an opacity component. Check that the returned alpha value matches the value you intend to use.
Worked color example
The sample rgb(51, 102, 153) corresponds to rgba(51, 102, 153, 1) for the color coordinates illustrated here. Small differences in the final digits can result from rounding. This example explains the mathematical representation; it does not establish which input syntax this tool accepts.
Understand the formats
RGB represents red, green, and blue channels. In the 8-bit convention used by these examples, each channel runs from 0 to 255. RGBA adds opacity to red, green, and blue channels. An alpha value of 0 is fully transparent and 1 is fully opaque; the example uses 0.8.
Transparency and rounding
The source example has no explicit alpha component. An opaque destination example uses alpha 1, or FF in hexadecimal. Check the actual result rather than assuming the tool chooses that default.
Frequently asked questions
Will the converted color look identical everywhere?
Equivalent coordinates describe the same color within the assumed color model. Displays, color profiles, surrounding colors, and backgrounds can affect appearance. Compare the result in the application where you will use it.
Can I interchange HSL lightness and HSV value?
No. They are different calculations. Recalculate the destination coordinates instead of moving the same percentages between HSL and HSV fields.
Related converters
Color converter tools | RGBA to RGB | RGB to HEX | RGB to HSL
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