How to Make a Three.js Background Transparent or Custom-Colored?

Transparent or Custom Background in Three.js

Q: How can I change the default black background color of my Three.js canvas to transparent or a different color?

A: This issue arises due to JavaScript's default canvas color. To modify it, adjust the following code:

renderer.setClearColorHex(0x000000, 1); // Default black background

// Change it to:
renderer.setClearColorHex(0xffffff, 1); // White background

Updates

• HdN8 recommends using renderer.setClearColor(0xffffff, 0); instead.
• WestLangley suggests creating a WebGLRenderer instance with alpha: true and using setClearColor().
• Mr.doob introduces an alternative method using scene.background = new THREE.Color(0xff0000);.

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