import { HeatmapConfig } from '../types';
/** Color for the built-in sample types when `sampleColors` has no entry. */
export declare const DEFAULT_SAMPLE_TYPE_COLORS: Record<string, string>;
export declare const HEATMAP_COLORS: Record<string, string[]>;
export declare function conditionGradientStyle(color: string, concentration: number, concentrations: number[]): Record<string, string>;
export declare function formatConcentration(value: number): string;
export declare function getHeatmapColor(config: HeatmapConfig | undefined, value: number | undefined): string | null;