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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. 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 you can require() on every Node.js version, including 18 and older, is 2.0.1, published Aug 19, 2019.

On Node.js 20.19+, 22.12+ and every newer release, require("color-convert") works anyway: Node can load synchronous ES modules through require(). Verified on Node 20, 22, 24, 26. Node.js 18 and older still fail with ERR_REQUIRE_ESM.

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✓ works✓ works

How to import color-convert

ES modules (import)

import colorConvert from "color-convert";

CommonJS (require)

// Node.js 20.19+ / 22.12+ / newer (package has no top-level await):
const colorConvert = require("color-convert");

// Any Node.js version:
const colorConvert = await import("color-convert");

// Or pin the last CommonJS release:
// 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 (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 you can require() on every Node.js version, including 18 and older, is 2.0.1, published Aug 19, 2019.

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

2.0.1 is the last version of color-convert with a CommonJS build. 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?

Use a dynamic import: const mod = await import("color-convert"). On Node.js 20.19+, 22.12+ and newer, a plain require("color-convert") also works for ESM packages that do not use top-level await. Alternatively pin color-convert@2.0.1.

Does color-convert work in Bun?

Yes. import "color-convert" loaded successfully in Bun 1.4 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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