@colormate/core/dist/conversions/RgbToCmyk.js

A modular and efficient color management library for JavaScript and TypeScript applications.

import { ColorValidator } from 'validators/ColorValidator';
import { ColorConverter } from '@helpers/ColorConverter';
export class RgbToCmyk extends ColorConverter {
    convert(rgb) {
        if (!ColorValidator.isValidRgb(rgb)) {
            throw new Error('Invalid RGB format');
        }
        const cacheKey = `${rgb.r},${rgb.g},${rgb.b}`;
        const cachedResult = this.getCachedResult(cacheKey);
        if (cachedResult)
            return cachedResult;
        const c = 1 - rgb.r / 255;
        const m = 1 - rgb.g / 255;
        const y = 1 - rgb.b / 255;
        const k = Math.min(c, m, y);
        const result = {
            c: ((c - k) / (1 - k)) * 100,
            m: ((m - k) / (1 - k)) * 100,
            y: ((y - k) / (1 - k)) * 100,
            k: k * 100,
        };
        this.cacheResult(cacheKey, result);
        return result;
    }
}