How Should You Choose Colors for a 404 Page? Choosing Colors That Preserve the Site’s Look and Feel

A 404 page tells visitors that the requested page cannot be found and helps them decide what to do next. Because it is an error page, it can be tempting to switch suddenly to strong red or black, but that can make the page feel as if it belongs to a different service. A better starting point is to reuse the background, text, and brand colors already established on the site, then make the route back—such as a home button or search option—easy to find. This article looks at color choices that keep a 404 page consistent with the rest of the site.

Base the 404 page on the site’s existing colors, not a new “error color”

The HTTP 404 Not Found status indicates that the server cannot find the requested resource. Google Search Central also recommends that a custom 404 page keep the same look and feel as the rest of the site, including navigation, and provide useful routes such as a link back to the home page.

For that reason, it is usually better to reuse the existing Primary color (the base color used for important actions and emphasis) and body text color than to introduce a new warning color only for the 404 page. Even if “404” is displayed prominently, do not make the number carry the whole message. Pair it with clear text such as “Page not found” and, when appropriate, a short explanation that the URL may have changed.

Three palettes that preserve different site moods

1. Corporate site: neutral background with a restrained blue

Use light gray ■#F7F8FA for the background, dark gray ■#25303B for body text, and blue ■#315F78 for the primary button. This keeps the page close to a typical corporate layout without making the error feel unnecessarily severe. Body text against the background is about 12.63:1, while blue ■#315F78 against light gray ■#F7F8FA is about 6.50:1. A blue ■#315F78 button with white text ■#FFFFFF is about 6.91:1.

2. Natural site: warm background with brown

Use warm ivory ■#F8F2E8 for the background, dark brown ■#3E342F for body text, and brown ■#8A5A3B for guidance and buttons. This helps a soft, natural site avoid turning suddenly cold or mechanical on its 404 page. Body text against the background is about 10.86:1, and brown ■#8A5A3B against warm ivory ■#F8F2E8 is about 5.23:1. A brown ■#8A5A3B button with white text ■#FFFFFF is about 5.82:1.

3. Dark site: keep the dark surface and use a bright accent for the way back

Use dark navy ■#171A21 for the background, light gray ■#F3F4F6 for body text, and light blue ■#7DD3FC for links and primary actions. This preserves a dark theme while making the actionable area easy to distinguish. Body text against the background is about 15.82:1, while light blue ■#7DD3FC against dark navy ■#171A21 is about 10.44:1. A light blue ■#7DD3FC button with dark navy text ■#0F172A is about 10.71:1.

Check the message, the route back, and contrast—not color alone

WCAG (Web Content Accessibility Guidelines) 2.2 requires a contrast ratio of at least 4.5:1 for normal-size text and 3:1 for large text. Visual information needed to identify a control or meaningful icon generally needs at least 3:1 against adjacent colors. Do not use color as the only cue. Label buttons with text such as “Back to Home” or “Search Articles” so the action is clear even without relying on the accent color.

Visual polish does not replace the correct HTTP behavior. If the page truly does not exist, the server should return a real 404 response instead of a 200 OK page that becomes a soft 404. If there is a clear replacement location, consider a 301 redirect instead. In HueRoll, you can choose candidate colors by entering a three- or six-digit HEX code or using the color picker, then check the selected color against white and black. HueRoll does not compare arbitrary color pairs or automatically determine WCAG AA or AAA conformance, so contrast between the actual background and foreground colors should be checked separately.