lighten($color, $amount) //=> color 

Makes $color lighter.

The $amount must be a number between 0% and 100% (inclusive). Increases the HSL lightness of $color by that amount.

⚠️ Heads up!

The lighten() function increases lightness by a fixed amount, which is often not the desired effect. To make a color a certain percentage lighter than it was before, use scale() instead.

Because lighten() is usually not the best way to make a color lighter, it’s not included directly in the new module system. However, if you have to preserve the existing behavior, lighten($color, $amount) can be written adjust($color, $lightness: $amount).


// #e1d7d2 has lightness 85%, so when lighten() adds 30% it just returns white.
@debug lighten(#e1d7d2, 30%); // white

// scale() instead makes it 30% lighter than it was originally.
@debug color.scale(#e1d7d2, $lightness: 30%); // #eae3e0