Grayscale, blur, hue, sepia, duotone and glow filters for photos, logos, icons and text.
1Brightness & Contrast
Images start slightly muted and pop with extra brightness and contrast on hover. Class: fx-brightness-contrast
<div class="d-flex flex-wrap align-items-center justify-content-center gap-3 p-3 h-100" style="min-height:200px">
<img src="https://images.unsplash.com/photo-1761839258420-5c3e2f2e2a74?auto=format&fit=crop&w=1200&h=800&q=70" alt="Photo that brightens on hover" class="fx-brightness-contrast object-fit-cover rounded-3" style="width:200px;height:140px">
</div>
/* CSS (already in assets/css/effects.css) */
.fx-brightness-contrast { filter: brightness(.82) contrast(.9); transition: filter .45s ease, transform .45s ease; }
.fx-brightness-contrast:hover, .fx-brightness-contrast:focus-visible { filter: brightness(1.12) contrast(1.2); transform: scale(1.02); }
@media (prefers-reduced-motion: reduce) {
.fx-brightness-contrast, .fx-brightness-contrast::before, .fx-brightness-contrast::after, .fx-brightness-contrast *, .fx-brightness-contrast *::before, .fx-brightness-contrast *::after { animation: none !important; transition: none !important; }
}2Duotone Effect
Turns any photo into a two-colour print in the theme colours; put the class on a wrapper around the img. Class: fx-duotone-effect
<div class="d-flex flex-wrap align-items-center justify-content-center gap-3 p-3 h-100" style="min-height:200px">
<figure class="fx-duotone-effect rounded-3 mb-0">
<img src="https://images.unsplash.com/photo-1541534741688-6078c6bfb5c5?auto=format&fit=crop&w=1200&h=800&q=70" alt="Duotone photo" class="object-fit-cover" style="width:210px;height:145px">
</figure>
</div>
/* CSS (already in assets/css/effects.css) */
.fx-duotone-effect { position: relative; display: inline-block; overflow: hidden; isolation: isolate; background: var(--wt-accent); }
.fx-duotone-effect img { display: block; filter: grayscale(1) contrast(1.2) brightness(1.1); mix-blend-mode: multiply; transition: filter .5s; }
.fx-duotone-effect::after {
content: ""; position: absolute; inset: 0; pointer-events: none;
background: var(--wt-primary); mix-blend-mode: lighten; transition: opacity .5s;
}
.fx-duotone-effect:hover::after { opacity: 0; }
.fx-duotone-effect:hover img { filter: grayscale(0); mix-blend-mode: normal; }
@media (prefers-reduced-motion: reduce) {
.fx-duotone-effect, .fx-duotone-effect::before, .fx-duotone-effect::after, .fx-duotone-effect *, .fx-duotone-effect *::before, .fx-duotone-effect *::after { animation: none !important; transition: none !important; }
}3Saturation Boost
Desaturated at rest, vivid on hover - draws attention to the product the visitor is looking at. Class: fx-saturation-boost
<div class="d-flex flex-wrap align-items-center justify-content-center gap-3 p-3 h-100" style="min-height:200px">
<img src="../assets/img/product-5.svg" alt="Product with boosted colour" class="fx-saturation-boost rounded-3 object-fit-cover" style="width:120px;height:120px"><img src="../assets/img/product-6.svg" alt="Second product" class="fx-saturation-boost rounded-3 object-fit-cover" style="width:120px;height:120px">
</div>
/* CSS (already in assets/css/effects.css) */
.fx-saturation-boost { filter: saturate(.6); transition: filter .4s ease, transform .4s ease; }
.fx-saturation-boost:hover, .fx-saturation-boost:focus-visible { filter: saturate(1.8); transform: scale(1.03); }
@media (prefers-reduced-motion: reduce) {
.fx-saturation-boost, .fx-saturation-boost::before, .fx-saturation-boost::after, .fx-saturation-boost *, .fx-saturation-boost *::before, .fx-saturation-boost *::after { animation: none !important; transition: none !important; }
}