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Primer CSS v18.0.0 replaces color modes V1 with V2. To help with the migration, please refer to the guide below.

The functional CSS color variables changed as well. Please refer to the deprecated variables section.

Utility classes

See color utility classes for a list of all the functional color utility classes.

Text

v16 v18
.color-text-primary .color-fg-default
.color-text-secondary .color-fg-muted
.color-text-tertiary .color-fg-muted
.color-text-link .color-fg-accent
.color-text-success .color-fg-success
.color-text-warning .color-fg-attention
.color-text-danger .color-fg-danger
.color-text-inverse .color-fg-on-emphasis
.color-text-white n/a*

Icon

v16 v18
.color-icon-primary .color-fg-default
.color-icon-secondary .color-fg-muted
.color-icon-tertiary .color-fg-muted
.color-icon-info .color-fg-accent
.color-icon-danger .color-fg-danger
.color-icon-success .color-fg-success
.color-icon-warning .color-fg-attention

Border

v16 v18
.color-border-primary .color-border-default
.color-border-secondary .color-border-muted
.color-border-tertiary .color-border-default
.color-border-inverse n/a
.color-border-info .color-border-accent-emphasis
.color-border-warning .color-border-attention-emphasis

Background

v16 v18
.color-bg-canvas .color-bg-default
.color-bg-canvas-inverse .color-bg-emphasis
.color-bg-canvas-inset .color-bg-inset
.color-bg-primary .color-bg-default
.color-bg-secondary .color-bg-subtle
.color-bg-tertiary .color-bg-subtle
.color-bg-info .color-bg-accent
.color-bg-info-inverse .color-bg-accent-emphasis
.color-bg-danger-inverse .color-bg-danger-emphasis
.color-bg-success-inverse .color-bg-success-emphasis
.color-bg-warning .color-bg-attention
.color-bg-warning-inverse .color-bg-attention-emphasis

Misc

v16 v18
.text-inherit .color-fg-inherit

A few more selectors and variables were removed. Please refer to deprecations.json for a complete list.

Note: The <kbd> styles also got removed from the markdown bundle. In case you import the markdown bundle without the base bundle, make sure to import the <kbd> styles as well:

@import "@primer/css/markdown/index.scss";
+ @import "@primer/css/base/kbd.scss";