Frosted Glass Loader
Two colored blobs orbit behind a pane of frosted glass, crisp where they poke past the edge and soft behind it. Built on backdrop-filter, so it is glassmorphism in one small loader.
Also known as: glassmorphism loader, glass spinner, backdrop blur loader.
HTML
<div class="ldr-frosted-glass" role="status" aria-label="Loading"> <span class="ldr-frosted-glass-orbit"></span> <span class="ldr-frosted-glass-pane"></span> </div>
CSS
.ldr-frosted-glass {
--s: var(--ldr-size, 48px);
--c: var(--ldr-color, #3b82f6);
position: relative;
width: var(--s);
height: var(--s);
}
.ldr-frosted-glass-orbit {
position: absolute;
inset: 0;
animation: ldr-frosted-glass-spin 2.4s linear infinite;
}
.ldr-frosted-glass-orbit::before,
.ldr-frosted-glass-orbit::after {
content: "";
position: absolute;
top: 50%;
left: 50%;
width: calc(var(--s) * 0.44);
height: calc(var(--s) * 0.44);
margin: calc(var(--s) * -0.22);
border-radius: 50%;
background: var(--c);
transform: translateX(calc(var(--s) * 0.3));
}
.ldr-frosted-glass-orbit::after {
background: oklch(from var(--c) l c calc(h + 90));
transform: translateX(calc(var(--s) * -0.3));
}
.ldr-frosted-glass-pane {
position: absolute;
inset: 10%;
border: 1px solid color-mix(in srgb, var(--ldr-color, #3b82f6) 45%, transparent);
border-radius: 30%;
background: color-mix(in srgb, var(--ldr-color, #3b82f6) 10%, transparent);
-webkit-backdrop-filter: blur(calc(var(--s) / 8));
backdrop-filter: blur(calc(var(--s) / 8));
}
@keyframes ldr-frosted-glass-spin {
to { transform: rotate(360deg); }
}
@media (prefers-reduced-motion: reduce) {
.ldr-frosted-glass, .ldr-frosted-glass *, .ldr-frosted-glass::before, .ldr-frosted-glass::after, .ldr-frosted-glass *::before, .ldr-frosted-glass *::after {
animation-duration: 3s;
}
}Tailwind CSS version
The same loader using only Tailwind's built-in animation utilities. No custom keyframes or config needed.
<div class="relative h-12 w-12" role="status" aria-label="Loading">
<div class="absolute inset-0 animate-spin [animation-duration:2.4s]">
<span class="absolute left-[28px] top-[13px] h-[21px] w-[21px] rounded-full bg-blue-500"></span>
<span class="absolute left-[-1px] top-[13px] h-[21px] w-[21px] rounded-full bg-pink-500"></span>
</div>
<div class="absolute inset-[10%] rounded-[30%] border border-blue-500/45 bg-blue-500/10 backdrop-blur-[6px]"></div>
</div>Customizing this loader
- Color: set
--ldr-coloron the element or a parent. Currently previewing#3b82f6. - Size: set
--ldr-size. Every dimension in the snippet is derived from it. Currently previewing64px. - Speed: change the duration on the
animationshorthand. Delays on the children are relative, so they keep their rhythm. - Accessibility: the root carries
role="status"and anaria-labelso screen readers announce the wait. The reduced-motion rule at the end slows the animation for users who asked for less motion.