AdminLTE/build/scss/_colors.scss

//
// Misc: Colors
//

// Background colors (theme colors)
@each $name, $color in $theme-colors {
  @include background-variant($name, $color);
}

// Background colors (colors)
@each $name, $color in $colors {
  @include background-variant($name, $color);
}

.bg-gray {
  background-color: $gray-500;
  color: color-yiq($gray-500);
}

.bg-gray-light {
  background-color: lighten($gray-200, 3%);
  color: color-yiq(lighten($gray-200, 3%)) !important;
}

.bg-black {
  background-color: $black;
  color: color-yiq($black) !important;
}

.bg-white {
  background-color: $white;
  color: color-yiq($white) !important;
}

// Gradient Background colors (theme colors)
@each $name, $color in $theme-colors {
  @include background-gradient-variant($name, $color);
}

// Gradient Background colors (colors)
@each $name, $color in $colors {
  @include background-gradient-variant($name, $color);
}

// Backgrund Color Disabled
[class^='bg-'].disabled {
  opacity: .65;
}

// Text muted hover
a.text-muted:hover {
  color: theme-color(primary) !important;
}

// Link Styles
.link-muted {
  color: darken($gray-500, 30%);

  &:hover,
  &:focus {
    color: darken($gray-500, 40%);
  }
}

.link-black {
  color: $gray-600;

  &:hover,
  &:focus {
    color: lighten($gray-500, 20%);
  }
}