An accordion that signals state changes through background tone shifts instead of arrows or rotation.
HTML
<div class="accordion-tone">
<button class="accordion-tone__header">Summary</button>
<div class="accordion-tone__content">
<p>Expanded content area.</p>
</div>
</div>CSS
.accordion-tone {
width: 200px;
border-radius: 16px;
background: #f9fafb;
overflow: hidden;
transition: background 150ms ease;
}
.accordion-tone__header {
width: 100%;
padding: 0.6rem;
border: none;
background: transparent;
font-size: 12px;
font-weight: 600;
color: #374151;
cursor: pointer;
}
.accordion-tone__content {
max-height: 0;
overflow: hidden;
padding: 0 0.6rem;
font-size: 11px;
color: #6b7280;
transition: max-height 200ms ease, padding 200ms ease;
}
.accordion-tone:hover {
background: #eef2ff;
}
.accordion-tone:hover .accordion-tone__content {
max-height: 60px;
padding: 0.4rem 0.6rem;
}
@media (prefers-color-scheme: dark) {
.accordion-tone {
background: #020617;
}
.accordion-tone:hover {
background: #1e1b4b;
}
.accordion-tone__header {
color: #e5e7eb;
}
.accordion-tone__content {
color: #9ca3af;
}
}Notes
- State indicated via tone, not icons
- Minimal motion footprint
- Ideal for dense dashboards
Preview styles shown. Production customization recommended.
Browse More UI Components
Explore hundreds of reusable HTML & CSS UI components built for modern web projects.
Discover buttons, cards, loaders, animations, layouts, and more all with live previews and clean, copy-paste code.