AdminLTE/src/scss/_toasts.scss

/**
 * Custom toast styles to reflect Bootstrap colors
 */

/**
 * Get button close SVG.
 * Returns an either white or black button SVG dependent on the given color name.
 *
 * @param string $value - Bootstrap color name
 * @return string - Close button SVG URL
 */
@function get-btn-close-svg($value) {
  @if $value == "primary" or $value == "secondary" or $value == "success" or $value == "danger" or $value == "dark" {
    @return "url(\"data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M.293.293a1 1 0 0 1 1.414 0L8 6.586 14.293.293a1 1 0 1 1 1.414 1.414L9.414 8l6.293 6.293a1 1 0 0 1-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 0 1-1.414-1.414L6.586 8 .293 1.707a1 1 0 0 1 0-1.414z'/%3e%3c/svg%3e\")";
  } @else {
    @return "url(\"data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23000'%3e%3cpath d='M.293.293a1 1 0 0 1 1.414 0L8 6.586 14.293.293a1 1 0 1 1 1.414 1.414L9.414 8l6.293 6.293a1 1 0 0 1-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 0 1-1.414-1.414L6.586 8 .293 1.707a1 1 0 0 1 0-1.414z'/%3e%3c/svg%3e\")";
  }
}

//
// Color variants
//
@each $name, $color in $theme-colors {
  .toast-#{$name} {
    --#{$prefix}toast-header-color: #{color-contrast($color)};
    --#{$prefix}toast-header-bg: #{$color};
    --#{$prefix}toast-header-border-color: #{$color};
    --#{$prefix}toast-border-color: #{$color};
    --#{$prefix}toast-bg: var(--#{$prefix}#{$name}-bg-subtle);
  }
  .toast-#{$name} .btn-close {
    --#{$prefix}btn-close-bg: #{get-btn-close-svg($name)};
  }
}