The Hex Color Preview extension renders a preview square of the color next to valid tagged hex codes.


You could use the Copy Extension button below to individually install this extension. To install, just paste anywhere in your Roam graph and click "Yes, I Know What I'm Doing".

Manual Installation

If the extension doesn't work after using the copy extension button above, try installing manually using the instructions below.

First create a block with the text {{[[roam/js]]}} on any page in your Roam DB. Then, create a single child of this block and type three backticks. A code block should appear. Copy this code and paste it into the child code block in your graph:

var existing = document.getElementById("roamjs-hex-color-preview");
if (!existing) {
  var extension = document.createElement("script");
  extension.src = "https://roamjs.com/hex-color-preview.js";
  extension.id = "roamjs-hex-color-preview";
  extension.async = true;
  extension.type = "text/javascript";

Finally, click "Yes, I Know What I'm Doing".


All you have to do is have the extension installed. Anytime you create a valid hex color tag, it will render a colored preview next to the tag.

To change the CSS styling of the preview, you'll want to change the CSS associated with the roamjs-hex-color-preview class.

By default, this extension accepts hexes of all lengths. To configure only accepting specific lengths, create a block in the roam/js/hex-color-preview page with the text "Include Lengths". For every length you'd like supported, create a child with that number. So if you only want hex codes with length 6 to be rendered, your blocks should be:

  • Include Lengths
    • 6



This extension is brought to you by RoamJS! If you are facing any issues reach out to support@roamjs.com or click on the chat button on the bottom right.

If you get value from using this extension, consider sponsoring RoamJS by clicking on the button below!

Other Extensions