How to change the value of a sass variable if the body has the is-white class, for example?

Question

Sass

How to change the value of a sass variable if the body has the is-white class, for example?
I thought to do this, but it doesn't work.

$primary-blue: #00D3FF !default

body.is-white
  $primary-blue: blue

Answer 1

Well, for example, after changing the value, apply to the property

$primary-blue: #00D3FF !default

body.is-white
  $primary-blue: blue
  color: $primary-blue