/**
 * Pre-constructed tools for color conversion and palette-oriented calculations.
 *
 * @module @nhtio/adk/batteries/tools/color
 *
 * @remarks
 * Pre-constructed bundled tools for the `color` category. Import individually, the whole
 * category, or import every tool via `@nhtio/adk/batteries`.
 */
import { Tool } from "../../../common";
/**
 * Compute the WCAG 2.1 contrast ratio between two colours.
 *
 * @remarks
 * Accepts hex (`#rgb`, `#rrggbb`), `rgb()`, `hsl()`, or one of the CSS / Material Design named
 * colours. Reports the ratio and pass/fail against WCAG AA and AAA at both normal and large text
 * sizes. If the foreground/background combination fails AA Normal (4.5:1), the tool suggests
 * lightened or darkened variants that would pass.
 */
export declare const colorContrastTool: Tool<import("../../../common").SpooledArtifact>;
/**
 * Generate a colour palette from a base colour using a named harmony.
 *
 * @remarks
 * Supported schemes: `complementary`, `analogous`, `triadic`, `split-complementary`,
 * `monochromatic`. Each entry reports its hex, rgb, and hsl forms, plus the contrast ratio
 * relative to the base colour.
 */
export declare const colorSchemeTool: Tool<import("../../../common").SpooledArtifact>;
/**
 * Lighten or darken a colour by a percentage of HSL lightness.
 *
 * @remarks
 * `amount` is clamped to `[1, 100]`; `steps` is clamped to `[1, 10]`. With `steps > 1` the tool
 * emits a ramp of progressively-adjusted colours, useful for generating tint/shade scales.
 */
export declare const colorAdjustTool: Tool<import("../../../common").SpooledArtifact>;