Lighten Color Tool
Enter a HEX or RGB/RGBA color and choose how much lighter it should become. Channels are blended toward white in linear-light sRGB.
A QUICK WALKTHROUGH
How to use this tool
- Enter a HEX or RGB/RGBA color.
- Set the lightening percentage from 0% to 100%.
- Copy the resulting HEX and RGB/RGBA values.
Linear-light RGB semantics
The input is parsed as sRGB. Each red, green, and blue channel is converted to linear light, blended toward 1 by the percentage, converted back to sRGB, and rounded to an 8-bit channel. This is channel arithmetic, not a perceptually uniform color model.
Input and output formats
The tool accepts #RGB, #RGBA, #RRGGBB, #RRGGBBAA, rgb(), rgba(), and comma-separated RGB values with channels from 0 to 255. Output uses uppercase HEX and an RGB or RGBA function.
Percentage and alpha
The percentage control ranges from 0% to 100%. At 0% the RGB channels are unchanged; at 100% they become white. The alpha channel is not blended toward white. HEX output rounds alpha to 8 bits; RGBA output rounds it to three decimal places.
GOOD TO KNOW
Common questions
Does lightening use HSL lightness?
No. It blends linear-light sRGB channels toward white, so it is not HSL or perceptually uniform.
What happens to transparency?
Alpha is not multiplied by the lightening percentage. HEX output rounds it to 8 bits; RGBA output rounds it to three decimal places.
Can I enter RGB values?
Yes. Use rgb(r, g, b), rgba(r, g, b, a), or comma-separated channels such as 102, 153, 204.