What does Darken Hex do that other Design pages on this site do not?

Lowers HSL lightness by a percent. Unlike Lighten Hex this darkens. Bad hex fails. Short version: Darken a hex color by percent.

Does Darken Hex upload my file or text to Tool-You servers?

No. Darken Hex runs in this browser tab. Files stay on the device. Limit note: Hex and percent.

Should I use Lighten Hex instead of Darken Hex?

Use Darken Hex when you need Darken a hex color by percent. Use Lighten Hex when you need Lighten a hex color by percent. They share a category (Design) but not the same job.

Darken Hex

Darken a hex color by percent.

Lowers HSL lightness by a percent. Unlike Lighten Hex this darkens. Bad hex fails.

What Darken Hex does

Lowers HSL lightness by a percent. Unlike Lighten Hex this darkens. Bad hex fails.

The interactive controls for Darken Hex load after this article so crawlers still read the instructions. Path /design/darken-hex is the canonical address. Work happens on this device; Tool-You does not take a copy of the file or pasted text for Darken Hex.

How to use Darken Hex

Use Darken Hex for this design job (design · darken hex). Lighten Hex is adjacent (Lighten a hex color by percent.) but not the same.
Add the file type Darken Hex accepts. Hint from the path: design · darken hex. Darken a hex color by percent.
Set only the options that match Darken Hex. Neighbor Mix Hex does something else (Mix two hex colors.). Tool note: Lowers HSL lightness by a percent. Unlike Lighten Hex this darkens. Bad hex fails.
Run Darken Hex in this tab. Browser memory still applies: Hex and percent.
Download or copy the result from Darken Hex. If it is the wrong job, open Lighten Hex instead.

When not to use Darken Hex

Skip Darken Hex when a neighbor tool matches better — start with Lighten Hex or Mix Hex — or when the description already warns the job will fail. In the tool’s own words: Lowers HSL lightness by a percent. Unlike Lighten Hex this darkens. Bad hex fails.

Questions about Darken Hex

What does Darken Hex do that other Design pages on this site do not?: Lowers HSL lightness by a percent. Unlike Lighten Hex this darkens. Bad hex fails. Short version: Darken a hex color by percent.
Does Darken Hex upload my file or text to Tool-You servers?: No. Darken Hex runs in this browser tab. Files stay on the device. Limit note: Hex and percent.
Should I use Lighten Hex instead of Darken Hex?: Use Darken Hex when you need Darken a hex color by percent. Use Lighten Hex when you need Lighten a hex color by percent. They share a category (Design) but not the same job.
What are the limits of Darken Hex?: Hex and percent. Also: Lowers HSL lightness by a percent. Unlike Lighten Hex this darkens. Bad hex fails.