Power Button Toggle
A dark round power button that presses in when switched on: the ring lights up in the accent color and breathes, and the power symbol redraws itself with a stroke-dashoffset sweep.
Also known as: power button css, on off power switch, power icon toggle.
HTML
<label class="tgl-power-button-toggle">
<input type="checkbox" role="switch" aria-label="Power">
<span class="tgl-power-button-toggle-ring" aria-hidden="true">
<span class="tgl-power-button-toggle-cap">
<svg class="tgl-power-button-toggle-icon" viewBox="0 0 24 24">
<path class="tgl-power-button-toggle-arc" pathLength="100" d="M7.05 6.46a8 8 0 1 0 9.9 0"/>
<path d="M12 3.5v8"/>
</svg>
</span>
</span>
</label>CSS
.tgl-power-button-toggle {
--c: var(--tgl-color, #3b82f6);
font-size: var(--tgl-size, 24px);
position: relative;
display: inline-flex;
align-items: center;
cursor: pointer;
-webkit-tap-highlight-color: transparent;
}
.tgl-power-button-toggle input {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
margin: 0;
opacity: 0;
cursor: pointer;
z-index: 1;
}
.tgl-power-button-toggle-ring {
position: relative;
display: grid;
place-items: center;
width: 4em;
height: 4em;
border-radius: 50%;
background: linear-gradient(145deg, #3f3f46, #18181b);
box-shadow: 0 0.3em 0.6em rgba(0, 0, 0, 0.35), inset 0 0.06em 0.04em rgba(255, 255, 255, 0.18);
}
/* the light groove, and a glow layer that breathes when on */
.tgl-power-button-toggle-ring::before,
.tgl-power-button-toggle-ring::after {
content: "";
position: absolute;
inset: 0.18em;
border-radius: 50%;
}
.tgl-power-button-toggle-ring::before {
border: 0.12em solid color-mix(in srgb, var(--c) 22%, #27272a);
transition: border-color 0.3s ease;
}
.tgl-power-button-toggle-ring::after {
box-shadow: 0 0 0.55em var(--c), inset 0 0 0.35em var(--c);
opacity: 0;
transition: opacity 0.3s ease;
}
.tgl-power-button-toggle-cap {
position: relative;
z-index: 1;
display: grid;
place-items: center;
width: 3.1em;
height: 3.1em;
border-radius: 50%;
background: linear-gradient(160deg, #52525b, #27272a 70%);
box-shadow: 0 0.18em 0.25em rgba(0, 0, 0, 0.55), inset 0 0.07em 0.05em rgba(255, 255, 255, 0.22), inset 0 -0.1em 0.2em rgba(0, 0, 0, 0.4);
transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.tgl-power-button-toggle-icon {
display: block;
width: 1.45em;
height: 1.45em;
fill: none;
stroke: #71717a;
stroke-width: 2.4;
stroke-linecap: round;
transition: stroke 0.3s ease, filter 0.3s ease;
}
.tgl-power-button-toggle-arc { stroke-dasharray: 100; }
.tgl-power-button-toggle:active .tgl-power-button-toggle-cap { transform: scale(0.93); }
.tgl-power-button-toggle input:checked + .tgl-power-button-toggle-ring::before { border-color: var(--c); }
.tgl-power-button-toggle input:checked + .tgl-power-button-toggle-ring::after {
opacity: 1;
animation: tgl-power-button-toggle-breathe 2.4s ease-in-out infinite;
}
.tgl-power-button-toggle input:checked + .tgl-power-button-toggle-ring .tgl-power-button-toggle-cap {
transform: translateY(0.04em) scale(0.96);
box-shadow: 0 0.06em 0.12em rgba(0, 0, 0, 0.55), inset 0 0.07em 0.05em rgba(255, 255, 255, 0.12), inset 0 -0.1em 0.2em rgba(0, 0, 0, 0.4);
}
.tgl-power-button-toggle input:checked + .tgl-power-button-toggle-ring .tgl-power-button-toggle-icon {
stroke: var(--c);
filter: drop-shadow(0 0 0.2em var(--c));
}
.tgl-power-button-toggle input:checked + .tgl-power-button-toggle-ring .tgl-power-button-toggle-arc {
animation: tgl-power-button-toggle-draw 0.7s cubic-bezier(0.6, 0, 0.2, 1);
}
@keyframes tgl-power-button-toggle-breathe {
0%, 100% { opacity: 1; }
50% { opacity: 0.45; }
}
@keyframes tgl-power-button-toggle-draw {
from { stroke-dashoffset: 100; }
to { stroke-dashoffset: 0; }
}
.tgl-power-button-toggle input:focus-visible + .tgl-power-button-toggle-ring {
outline: 2px solid var(--c);
outline-offset: 0.2em;
}
@media (prefers-reduced-motion: reduce) {
.tgl-power-button-toggle, .tgl-power-button-toggle *, .tgl-power-button-toggle::before, .tgl-power-button-toggle::after, .tgl-power-button-toggle *::before, .tgl-power-button-toggle *::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.