wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-dark-mode.php:276Determines if we want to print the dark-mode switch or not.
bool public function switch_should_render() { global $is_IE; return ( get_theme_mod( 'respect_user_color_preference', false ) && ! $is_IE && 127 <= Twenty_Twenty_One_Custom_Colors::get_relative_luminance_from_hex( get_theme_mod( 'background_color', 'D1E4DD' ) ) ); }Introduced in Twenty Twenty-One 1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-dark-mode.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.