How Should You Choose Icon Colors? Color Scheme Tips for Fitting Them into Web Design

Website icons may be small, but they can help visitors recognize information and find controls. Giving every icon the same brand color can create consistency, yet the icons may become difficult to distinguish on different backgrounds. Assigning a different bright color to each icon is not always helpful either. Start by separating decorative icons, icons that convey information, and icons used for actions. This article uses a civic auditorium’s facilities information page to show how to choose colors that fit the surrounding design.

Choose icon contrast according to whether the icon decorates, informs, or controls

A decorative icon, such as a background music-note motif, adds visual atmosphere but is not needed to understand the content or use the page. It can be relatively subtle. An informational icon, such as an elevator or locker symbol, may need stronger contrast if recognizing its shape is important to understanding the facility information. An action icon, such as a magnifying-glass symbol for enlarging a map, needs to be identifiable as part of an operable control.

Under WCAG 2.2 (Web Content Accessibility Guidelines), meaningful graphical objects and visual information necessary to identify user interface controls generally require at least 3:1 contrast against adjacent colors. A contrast ratio expresses the difference in relative luminance between two colors. However, purely decorative graphics and icons whose information is fully conveyed in an equivalent adjacent text label are not automatically subject to the same non-text requirement. Ordinary-sized text generally needs at least 4.5:1 contrast against its background, and large text at least 3:1.

Include visible labels such as “Restrooms,” “Lockers,” and “Enlarge map” rather than asking visitors to interpret the icon color alone. Consistency does not mean every icon must be equally dark: it means that icons with the same purpose follow predictable visual rules.

Example icon palette for a civic auditorium facilities page

Imagine a page listing restrooms, lockers, elevators, travel directions, a floor map, and notices about temporarily unavailable facilities. HEX is the hexadecimal notation used to specify colors on the web. The icon color should be checked against the actual surface where it appears.

• Header: Use deep green ■#26594B as the background, with white ■#FFFFFF for the auditorium name. The text-to-background contrast ratio is about 8.04:1. This green is the starting point for the site’s informational color scheme.
• Body copy and headings: Put explanatory text in dark gray-green ■#283A33 on warm off-white ■#F8F7F2 for approximately 11.23:1 contrast. Headings in deep green ■#26594B against the same off-white ■#F8F7F2 have about 7.49:1 contrast.
• Facilities cards: Use dark gray-green ■#283A33 text on white ■#FFFFFF cards for about 12.05:1 contrast. White cards ■#FFFFFF differ from the surrounding off-white ■#F8F7F2 by only about 1.07:1, so add muted gray-green ■#73857B outlines. The border contrasts about 3.91:1 with white ■#FFFFFF.
• Restroom and locker icons: Use a shared deep teal-green ■#2B6358 for these facility icons on white ■#FFFFFF cards. The icon-to-background ratio is about 6.93:1. Give each symbol an adjacent visible label so visitors do not have to identify facilities through the pictogram alone.
• Elevator information panel: Place a teal-green ■#2B6358 elevator symbol on pale green ■#E8F1EB for approximately 6.01:1 contrast. Description text in dark gray-green ■#283A33 against the same panel ■#E8F1EB has about 10.45:1. Include written directions and any conditions of use rather than relying only on the symbol.
• Selected floor on the indoor map: Give the currently selected floor a pale mint ■#E1EEE6 surface and deep green ■#245C4D indicator, providing about 6.48:1 icon contrast. Pale mint ■#E1EEE6 differs from the off-white page ■#F8F7F2 by only about 1.11:1, so define the selection with a muted gray-green ■#73857B border. That border contrasts about 3.27:1 with mint ■#E1EEE6. Also display words such as “Viewing floor 2.”
• “Enlarge map” action icon: Use deep blue-green ■#245E70 as the button background with a white ■#FFFFFF magnifying-glass icon. The icon-to-button contrast ratio is about 7.22:1, while the button surface contrasts by about 6.73:1 with surrounding off-white ■#F8F7F2. Prefer a visible “Enlarge map” label; if the button contains only an icon, provide an accessible name for assistive technology.
• Temporarily closed facilities: For a notice such as “Lockers temporarily unavailable,” use deep terracotta ■#96472F with white ■#FFFFFF icon and text. Both the icon and lettering contrast about 6.48:1 with the terracotta surface. State the restriction in words instead of expecting red-brown to communicate its meaning.
• Decorative music-note motifs: Pale sage ■#BBD7C9 against warm off-white ■#F8F7F2 has only about 1.43:1 contrast. That is insufficient if the icon is necessary to understand facility information, but it can be a subdued decorative treatment when nothing important depends on perceiving the motif.

Teal-green works as a shared color for facility information, a blue-green button identifies the map action, and a labeled terracotta notice explains a temporary restriction. Pale decorative motifs remain secondary. Consistency comes from assigning a role to each kind of icon, not from coloring all icons identically.

Review stroke weight, visible labels, and accessible names

A very thin line icon may be difficult to see at small sizes even when its specified HEX colors achieve a good numerical contrast ratio. Anti-aliasing can make thin strokes appear fainter. Check that icons remain recognizable on small mobile screens and place a solid surface behind essential icons if they would otherwise sit over a photograph with varying brightness.

Icon-only buttons must have an accessible name describing what they do. In HTML (HyperText Markup Language), an aria-label attribute can provide “Enlarge map” to assistive technology when there is no visible button text. A purely decorative SVG beside an adequately labeled control can sometimes use aria-hidden="true" to avoid redundant announcements; do not hide an icon that is the only source of important information.

HueRoll can check a selected color’s contrast against white or black, but it cannot directly compare arbitrary pairs of custom colors or automatically determine WCAG AA or AAA compliance. The icon-to-background ratios above were calculated separately. Review icon shapes, labels, and keyboard interaction together before the page is published.