[ @sdxc/u/responsive ]

contrastMore

Sugar over media("(prefers-contrast: more)", input).

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import { contrastMore } from "@sdxc/u/responsive";

Quick reference

Every documented call, beside the CSS it emits.

Call	CSS
`u.contrastMore(u.fg("neutral.emphasis"))`	`css({ "@media (prefers-contrast: more)": { color: "var(--ui-neutral-fg-emphasis)" } })`

Examples

Basic example

Use contrastMore(...) to apply utilities when the reader asks for more contrast. Turn on Increase contrast in your system's accessibility settings, or emulate prefers-contrast: more in your browser's dev tools, to see the hint darken:

EmailWe never share it.

<label mix={[vstack({ gap: 2 }), ...]}>
	<span>Email</span>
	<input type="email" placeholder="you@example.com" mix={[...]} />
	<span mix={[fg("neutral.muted"), contrastMore(fg("neutral.emphasis"))]}>
		We never share it.
	</span>
</label>

Applying on a state

Wrap the call in a state utility to scope it to one selector.

u.hover(u.contrastMore(u.fg("neutral.emphasis")))

Customizing your theme

Customizing colors

Define a palette as --ui-color-{name}-{50..950} and map a tone onto it with the --ui-{tone}-* variables, the way theme.css maps the built-in ones:

:root {
	--ui-color-info-50: oklch(0.97 0.02 230);
	--ui-color-info-200: oklch(0.88 0.06 230);
	--ui-color-info-500: oklch(0.62 0.16 230);
	--ui-color-info-600: oklch(0.52 0.18 230);
	--ui-color-info-900: oklch(0.3 0.1 230);

	--ui-info-bg-tint: var(--ui-color-info-50);
	--ui-info-bg-solid: var(--ui-color-info-600);
	--ui-info-fg: var(--ui-color-info-600);
	--ui-info-fg-muted: var(--ui-color-info-500);
	--ui-info-fg-emphasis: var(--ui-color-info-900);
	--ui-info-fg-on-solid: white;
	--ui-info-border: var(--ui-color-info-200);
	--ui-info-border-strong: var(--ui-color-info-600);
	--ui-info-ring: var(--ui-color-info-500);
}

declare module "@sdxc/u" {
	interface ColorPalettes {
		info: true;
	}
	interface SemanticTones {
		info: true;
	}
}

The new name is then accepted wherever the scale is:

bg("info")

Signature

u.contrastMore(input: UtilityInput<Node>)