Why Does ColorKit Say JavaScript Is Required?

ColorKit shows the message "ColorKit doesn't work properly without JavaScript enabled" because the site is a client-side web app: its color blending, shade, and tint generation all run in your browser through JavaScript. If JavaScript is disabled or blocked, the page has nothing to render and falls back to that notice. The fix is to enable JavaScript for colorkit.io and reload the page — this is a browser setting, not an account, login, or payment restriction.

What the message actually means

The notice on colorkit.io reads:

"We're sorry but ColorKit doesn't work properly without JavaScript enabled. Please enable it to continue."

That wording points to one cause: the browser loaded the page but refused (or was unable) to execute its scripts. ColorKit's own description — it "blends colors and generates a color's shades and tints" — describes work that happens in the browser, so the tool cannot function until scripts are allowed to run.

It is not a sign that:

• the site is down,
• you need to sign in,
• you have hit a paywall or usage limit.

The site's published material does not mention pricing, accounts, or login requirements, so don't read the JavaScript notice as any of those.

How to enable JavaScript and reload

The exact menu names differ by browser, but the path is the same everywhere: find the site-permission or content setting for JavaScript, allow it for colorkit.io, then reload.

Chrome or Edge (desktop)

1. Open colorkit.io.
2. Click the icon to the left of the address bar (site information / permissions).
3. Find JavaScript in the permissions list and set it to Allow.
4. Reload the page.

Expected result: the notice disappears and the color tools render.

Firefox (desktop)

1. Open colorkit.io.
2. Click the shield or site-information icon in the address bar.
3. Turn off any blocking for the site, or open Settings → Privacy & Security → Permissions → JavaScript → Exceptions and add colorkit.io as allowed.
4. Reload the page.

Safari (macOS)

1. Open Safari → Settings → Websites → JavaScript (older versions: Preferences → Security).
2. Set JavaScript to allowed for colorkit.io, or enable it globally.
3. Reload the page.

Mobile browsers

Most mobile browsers enable JavaScript by default and don't expose a per-site toggle. If you see the notice on a phone, the usual culprits are a content blocker, a "reader"/data-saver mode, or a privacy extension — disable those for the site and reload.

If enabling JavaScript doesn't fix it

Work through these in order, since each one can block scripts even when the setting above looks correct:

• Extensions and blockers. Ad blockers, script blockers, and privacy extensions can stop JavaScript on a per-site basis. Disable them for colorkit.io, or add it to an allowlist, then reload.
• Hard refresh. A cached, partially loaded page can keep showing the notice. Use a hard reload (Ctrl+Shift+R on Windows/Linux, Cmd+Shift+R on macOS) to fetch fresh scripts.
• Try a private/incognito window. If the tool works there, an extension or cached data is the cause.
• Try another browser. This separates a browser-specific setting from a network or device problem.
• Corporate or school networks. Some managed networks strip or block scripts. If the tool fails on one network but works on another, that's the likely reason.

Quick reference

Once JavaScript is running, ColorKit's blending and shade/tint generation become available — the notice is purely a runtime requirement of the page, not a gate on your account or a paid feature.