Lighten color from parent in Less

Question

I am starting out with Less and one of the reasons I wanted to is because of the ligthen() function. So my first attempt was to do something with that.

This is my HTML

Answer 1

I am not completely sure what your desired solution would be ... but maybe something like making a mixin would help you from having to write so much stuff out.

LESS:

.bgmixin(@color) {
    (~".@{color}") {
        background-color: @@color;
        .boxbar {
            background-color: lighten(@@color, 10%);
        }
    }
}

@blue: #468ACE;
@green: #41A53D;
@red: #9C2525;

.bgmixin("blue");
.bgmixin("green");
.bgmixin("red");

CSS:

.blue{
  background-color: #468ace;
}
.blue .boxbar {
  background-color: #6ea3d9;
}
.green{
  background-color: #41a53d;
}
.green .boxbar {
  background-color: #59c055;
}
.red{
  background-color: #9c2525;
}
.red .boxbar{
  background-color: #c52f2f;
}

---

Update:

In LESS>=1.4 you would want to use something like this to interpolate the class name from the color name:

.bgmixin(@color) {
    @classname: ~"@{color}"; 
    .@{classname} {
        background-color: @@color;
        .boxbar {
            background-color: lighten(@@color, 10%);
        }
    }
}