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<style>
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        width: 40px;
        height: 40px;
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<div><span class="swatch" style="background-color: -apple-system-header-text"></span>-apple-system-header-text</div>
<div><span class="swatch" style="background-color: -apple-system-text-background"></span>-apple-system-text-background</div>
<div><span class="swatch" style="background-color: -apple-system-control-background"></span>-apple-system-control-background</div>
<div><span class="swatch" style="background-color: -apple-system-alternate-selected-text"></span>-apple-system-alternate-selected-text</div>
<div><span class="swatch" style="background-color: -apple-system-control-accent"></span>-apple-system-control-accent</div>
<div><span class="swatch" style="background-color: -apple-system-even-alternating-content-background"></span>-apple-system-even-alternating-content-background</div>
<div><span class="swatch" style="background-color: -apple-system-odd-alternating-content-background"></span>-apple-system-odd-alternating-content-background</div>
<div><span class="swatch" style="background-color: -apple-system-selected-content-background"></span>-apple-system-selected-content-background</div>
<div><span class="swatch" style="background-color: -apple-system-unemphasized-selected-content-background"></span>-apple-system-unemphasized-selected-content-background</div>
<div><span class="swatch" style="background-color: -apple-system-selected-text"></span>-apple-system-selected-text</div>
<div><span class="swatch" style="background-color: -apple-system-unemphasized-selected-text"></span>-apple-system-unemphasized-selected-text</div>
<div><span class="swatch" style="background-color: -apple-system-selected-text-background"></span>-apple-system-selected-text-background</div>
<div><span class="swatch" style="background-color: -apple-system-unemphasized-selected-text-background"></span>-apple-system-unemphasized-selected-text-background</div>
<div><span class="swatch" style="background-color: -apple-system-placeholder-text"></span>-apple-system-placeholder-text</div>
<div><span class="swatch" style="background-color: -apple-system-find-highlight-background"></span>-apple-system-find-highlight-background</div>
<div><span class="swatch" style="background-color: -apple-system-label"></span>-apple-system-label</div>
<div><span class="swatch" style="background-color: -apple-system-secondary-label"></span>-apple-system-secondary-label</div>
<div><span class="swatch" style="background-color: -apple-system-tertiary-label"></span>-apple-system-tertiary-label</div>
<div><span class="swatch" style="background-color: -apple-system-quaternary-label"></span>-apple-system-quaternary-label</div>
<div><span class="swatch" style="background-color: -apple-system-grid"></span>-apple-system-grid</div>
<div><span class="swatch" style="background-color: -apple-system-separator"></span>-apple-system-separator</div>
<div><span class="swatch" style="background-color: -apple-system-container-border"></span>-apple-system-container-border</div>
<div style="color: -apple-system-label"><span class="swatch" style="background-color: currentcolor;"></span>current-color with inherited -apple-system-label</div>