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Is color-convert ESM-only? Can you require() it?

Plain color conversion functions

Last verified Sep 9, 2026 against color-convert@3.1.3. Markdown · JSON

ESM-only ESM-only since 3.0.0 — last CommonJS version is 2.0.1

color-convert dropped its CommonJS build in 3.0.0 (February 2025). The last version with a plain require()-able CommonJS entry is 2.0.1, published Aug 19, 2019; it declares support for Node.js >=7.0.0.

On Node.js 20.19+, 22.12+ and newer, require("color-convert") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. On Node.js 18, which has no require(esm), require("color-convert") fails with ERR_REQUIRE_ESM.

What to do

  1. On Node.js 20.19+, 22.12+ and newer, require("color-convert") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26.
  2. From a CommonJS file, use a dynamic import inside an async function: const colorConvert = await import("color-convert"). That works on every Node.js version the package supports (>=14.6).
  3. If you need a synchronous require() or run Node.js 18: npm install color-convert@2.0.1, the last CommonJS release (published Aug 19, 2019); it declares Node.js >=7.0.0.
  4. TypeScript: types are bundled; install nothing extra.
Latest
3.1.3 (Nov 14, 2025)
Module format
ESM-only
Last CommonJS version
2.0.1
ESM-only since
3.0.0 (Feb 5, 2025)
TypeScript types
Bundled
Node engines
>=14.6
Weekly downloads
299.6M
License
MIT

Does color-convert@3.1.3 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("color-convert") from a CommonJS file and import "color-convert" from an ES module.

Runtimerequire("color-convert")import "color-convert"
Node.js 18✗ failsERR_REQUIRE_ESM✓ works
Node.js 20✓ works✓ works
Node.js 22✓ works✓ works
Node.js 24✓ works✓ works
Node.js 26✓ works✓ works
Bun 1.4.0✓ works✓ works

How to import color-convert

ES modules (import)

import * as colorConvert from "color-convert";

Namespace import shown because the ESM entry may have no default export; use named imports for what it exports.

CommonJS (require)

// Node.js 20.19+, 22.12+ and newer (verified):
const colorConvert = require("color-convert");

// Any Node.js version the package supports (>=14.6), from an async function:
async function main() {
  const colorConvert = await import("color-convert");
}

// Or pin the last CommonJS release (declares Node.js >=7.0.0):
// npm install color-convert@2.0.1

Module format by version

Derived from the type, main and exports fields of every stable release on npm, corrected where a runtime test of that version contradicted them (40 versions; the newest 40 shown).

VersionsFormatFirst published
3.0.0 – 3.1.3ESM-onlyFeb 5, 2025
0.1.0 – 2.0.1CommonJSJun 10, 2011

Frequently asked

Is color-convert ESM-only?

color-convert@3.1.3 is ESM-only. color-convert dropped its CommonJS build in 3.0.0 (February 2025). The last version with a plain require()-able CommonJS entry is 2.0.1, published Aug 19, 2019; it declares support for Node.js >=7.0.0.

Which version of color-convert still supports CommonJS / require()?

2.0.1 is the last version of color-convert with a CommonJS build; it declares Node.js >=7.0.0. Install it with "npm install color-convert@2.0.1". Every version from 3.0.0 on is ESM-only.

How do I use color-convert from a CommonJS file?

From a CommonJS file, use a dynamic import inside an async function: const colorConvert = await import("color-convert"). That works on every Node.js version the package supports (>=14.6). On Node.js 20.19+, 22.12+ and newer, require("color-convert") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. Alternatively pin color-convert@2.0.1 (declares Node.js >=7.0.0).

Does color-convert work in Bun?

Yes. import "color-convert" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does color-convert ship TypeScript types?

Yes. color-convert bundles its own type declarations; no @types package is needed.

Links

Other esm-only packages

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