Gradient Toggle Switch
A switch whose track fills with a slowly drifting gradient mixed from your accent, with a soft colored glow underneath. The gradient is its own layer, so it fades in instead of snapping.
Also known as: gradient switch css, colorful toggle switch, animated gradient toggle.
HTML
<label class="tgl-gradient"> <input type="checkbox" role="switch" aria-label="Boost mode" checked> <span class="tgl-gradient-track" aria-hidden="true"></span> </label>
CSS
.tgl-gradient {
--c: var(--tgl-color, #3b82f6);
font-size: var(--tgl-size, 24px);
position: relative;
display: inline-block;
vertical-align: middle;
cursor: pointer;
-webkit-tap-highlight-color: transparent;
}
.tgl-gradient input {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
margin: 0;
opacity: 0;
cursor: pointer;
z-index: 1;
}
.tgl-gradient-track {
position: relative;
display: block;
width: 3.8em;
height: 2em;
border-radius: 1em;
background: color-mix(in srgb, currentColor 13%, transparent);
}
.tgl-gradient-track::before {
content: "";
position: absolute;
inset: 0;
border-radius: inherit;
background: linear-gradient(90deg,
var(--c),
color-mix(in oklch, var(--c) 45%, #d946ef),
color-mix(in oklch, var(--c) 30%, #fb7185),
var(--c)) 0 0 / 300% 100%;
box-shadow: 0 0.35em 0.9em -0.25em color-mix(in srgb, var(--c) 80%, transparent);
opacity: 0;
transition: opacity 0.35s ease;
}
.tgl-gradient-track::after {
content: "";
position: absolute;
top: 0.2em;
left: 0.2em;
width: 1.6em;
height: 1.6em;
border-radius: 50%;
background: #fff;
box-shadow: 0 0.1em 0.3em rgb(0 0 0 / 0.25);
transition: transform 0.4s cubic-bezier(0.3, 0.7, 0.3, 1);
}
.tgl-gradient input:checked + .tgl-gradient-track::before {
opacity: 1;
animation: tgl-gradient-drift 3s ease-in-out infinite alternate;
}
.tgl-gradient input:checked + .tgl-gradient-track::after { transform: translateX(1.8em); }
.tgl-gradient input:focus-visible + .tgl-gradient-track {
outline: 2px solid var(--c);
outline-offset: 2px;
}
@keyframes tgl-gradient-drift {
to { background-position: 100% 0; }
}
@media (prefers-reduced-motion: reduce) {
.tgl-gradient, .tgl-gradient *, .tgl-gradient::before, .tgl-gradient::after, .tgl-gradient *::before, .tgl-gradient *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--tgl-coloron the element or a parent. Currently previewing#3b82f6. - Size: set
--tgl-size. Every other dimension is inem, so the whole thing scales together. Currently previewing24px. - Speed: change the duration on the
transitionoranimationshorthand. Staggered delays are relative, so they keep their rhythm. - Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.