# Seigaiha wave pattern
> The Japanese pattern of overlapping wave scales in indigo and washi paper, with a gold leaf glow that appears under the pointer.
- Category: [Backgrounds](https://library.aimran.es/components/patterns)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/pt-uvq16-seigaiha
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham
## Where to use it
Seigaiha, the blue ocean wave, has decorated Japanese textiles and ceramics for centuries. This version builds it from an 80 by 40 SVG tile where each scale is a set of concentric rings, stacked so the lower rows cover the upper ones. The whole surface drifts sideways like a slow tide, and a second, gold version is revealed through a soft round mask.
The first color is the indigo, the second the paper lines and the third the gold leaf. Density makes the scales smaller. Without a pointer the gold glow wanders on its own; hover the pattern and it follows you. Beautiful for tea, ceramics, Japanese food and hospitality.
## Code
### HTML
```html
```
### CSS
```css
.pt-uvq16-seigaiha {
--c1: #1f3a6e;
--c2: #f3ecdc;
--c3: #d4a636;
--k: 1;
/* velocidad */
--d: 1;
/* densidad / escala */
--o: 1;
/* opacidad */
--bg: #05060a;
--fg: #ffffff;
--blend: screen;
min-height: 100vh;
}
.pt-uvq16-seigaiha {
position: relative;
width: 100%;
height: 100%;
overflow: hidden;
background-color: var(--bg);
container-type: size;
isolation: isolate;
}
.pt-uvq16-seigaiha>* {
opacity: var(--o);
}
@property --uvq16-gx {
syntax: "";
inherits: true;
initial-value: 50%;
}
@property --uvq16-gy {
syntax: "";
inherits: true;
initial-value: 50%;
}
.pt-uvq16-seigaiha {
background: var(--c1);
}
.pt-uvq16-seigaiha .tl {
position: absolute;
left: 0;
top: 0;
width: calc(100% * var(--d) + 80px);
height: calc(100% * var(--d));
transform-origin: 0 0;
scale: calc(1 / var(--d));
animation: uvq16-sg-dr calc(24s / var(--k)) linear infinite;
}
.pt-uvq16-seigaiha .f {
fill: var(--c1);
stroke: var(--c2);
stroke-width: 2.6;
}
.pt-uvq16-seigaiha .w {
fill: none;
stroke: var(--c2);
stroke-width: 2.6;
}
.pt-uvq16-seigaiha .w0 {
fill: var(--c2);
}
.pt-uvq16-seigaiha .gd {
position: absolute;
inset: 0;
-webkit-mask: radial-gradient(circle 32cqmin at var(--uvq16-gx) var(--uvq16-gy),#000,rgba(0,0,0,.55) 45%,transparent);
mask: radial-gradient(circle 32cqmin at var(--uvq16-gx) var(--uvq16-gy),#000,rgba(0,0,0,.55) 45%,transparent);
animation: uvq16-sg-g calc(14s / var(--k)) ease-in-out infinite;
}
.pt-uvq16-seigaiha .gd .f {
fill: color-mix(in srgb,var(--c1) 82%,var(--c3));
stroke: var(--c3);
}
.pt-uvq16-seigaiha .gd .w {
stroke: var(--c3);
}
.pt-uvq16-seigaiha .gd .w0 {
fill: var(--c3);
}
.pt-uvq16-seigaiha[data-on] .gd {
animation: none;
}
@keyframes uvq16-sg-dr {
to {
translate: calc(-80px / var(--d)) 0;
}
}
@keyframes uvq16-sg-g {
0%,100% {
--uvq16-gx: 22%;
--uvq16-gy: 30%;
}
33% {
--uvq16-gx: 76%;
--uvq16-gy: 24%;
}
66% {
--uvq16-gx: 58%;
--uvq16-gy: 78%;
}
}
@media (prefers-reduced-motion:reduce) {
.pt-uvq16-seigaiha .tl,.pt-uvq16-seigaiha .gd {
animation: none;
}
}
```
### JavaScript
```js
(function (el) {
const gd=el.querySelector(".gd");const mv=e=>{const r=el.getBoundingClientRect();if(!r.width)return;gd.style.setProperty("--uvq16-gx",((e.clientX-r.left)/r.width*100).toFixed(1)+"%");gd.style.setProperty("--uvq16-gy",((e.clientY-r.top)/r.height*100).toFixed(1)+"%");el.dataset.on="1"};
const lv=()=>{delete el.dataset.on;gd.style.removeProperty("--uvq16-gx");gd.style.removeProperty("--uvq16-gy")};el.addEventListener("pointermove",mv);el.addEventListener("pointerleave",lv);
return()=>{el.removeEventListener("pointermove",mv);el.removeEventListener("pointerleave",lv)};
})(document.querySelector(".pt-uvq16-seigaiha"));
```
### React
```tsx
// @ts-nocheck
import { useEffect, useRef } from "react";
const css = `
.pt-uvq16-seigaiha {
position: relative;
width: 100%;
height: 100%;
overflow: hidden;
background-color: var(--bg);
container-type: size;
isolation: isolate;
}
.pt-uvq16-seigaiha>* {
opacity: var(--o);
}
@property --uvq16-gx {
syntax: "";
inherits: true;
initial-value: 50%;
}
@property --uvq16-gy {
syntax: "";
inherits: true;
initial-value: 50%;
}
.pt-uvq16-seigaiha {
background: var(--c1);
}
.pt-uvq16-seigaiha .tl {
position: absolute;
left: 0;
top: 0;
width: calc(100% * var(--d) + 80px);
height: calc(100% * var(--d));
transform-origin: 0 0;
scale: calc(1 / var(--d));
animation: uvq16-sg-dr calc(24s / var(--k)) linear infinite;
}
.pt-uvq16-seigaiha .f {
fill: var(--c1);
stroke: var(--c2);
stroke-width: 2.6;
}
.pt-uvq16-seigaiha .w {
fill: none;
stroke: var(--c2);
stroke-width: 2.6;
}
.pt-uvq16-seigaiha .w0 {
fill: var(--c2);
}
.pt-uvq16-seigaiha .gd {
position: absolute;
inset: 0;
-webkit-mask: radial-gradient(circle 32cqmin at var(--uvq16-gx) var(--uvq16-gy),#000,rgba(0,0,0,.55) 45%,transparent);
mask: radial-gradient(circle 32cqmin at var(--uvq16-gx) var(--uvq16-gy),#000,rgba(0,0,0,.55) 45%,transparent);
animation: uvq16-sg-g calc(14s / var(--k)) ease-in-out infinite;
}
.pt-uvq16-seigaiha .gd .f {
fill: color-mix(in srgb,var(--c1) 82%,var(--c3));
stroke: var(--c3);
}
.pt-uvq16-seigaiha .gd .w {
stroke: var(--c3);
}
.pt-uvq16-seigaiha .gd .w0 {
fill: var(--c3);
}
.pt-uvq16-seigaiha[data-on] .gd {
animation: none;
}
@keyframes uvq16-sg-dr {
to {
translate: calc(-80px / var(--d)) 0;
}
}
@keyframes uvq16-sg-g {
0%,100% {
--uvq16-gx: 22%;
--uvq16-gy: 30%;
}
33% {
--uvq16-gx: 76%;
--uvq16-gy: 24%;
}
66% {
--uvq16-gx: 58%;
--uvq16-gy: 78%;
}
}
@media (prefers-reduced-motion:reduce) {
.pt-uvq16-seigaiha .tl,.pt-uvq16-seigaiha .gd {
animation: none;
}
}
`;
export default function PatternUvq16Seigaiha() {
const ref = useRef(null);
useEffect(() => {
const el = ref.current;
if (!el) return;
const gd=el.querySelector(".gd");const mv=e=>{const r=el.getBoundingClientRect();if(!r.width)return;gd.style.setProperty("--uvq16-gx",((e.clientX-r.left)/r.width*100).toFixed(1)+"%");gd.style.setProperty("--uvq16-gy",((e.clientY-r.top)/r.height*100).toFixed(1)+"%");el.dataset.on="1"};
const lv=()=>{delete el.dataset.on;gd.style.removeProperty("--uvq16-gx");gd.style.removeProperty("--uvq16-gy")};el.addEventListener("pointermove",mv);el.addEventListener("pointerleave",lv);
return()=>{el.removeEventListener("pointermove",mv);el.removeEventListener("pointerleave",lv)};
}, []);
return (
<>
);
}
```
## Prompt for AI assistants
Paste this into ChatGPT, Claude, Cursor, v0 or Lovable to adapt the block to your stack (Tailwind, Vue, Svelte…):
````text
I want to add the “Seigaiha wave pattern” block (Backgrounds) from AIMRAN Library to my project.
## What it is
The Japanese pattern of overlapping wave scales in indigo and washi paper, with a gold leaf glow that appears under the pointer.
## Chosen settings
- Color 1: #1f3a6e
- Color 2: #f3ecdc
- Color 3: #d4a636
- Speed: 1x (from 0.2 to 3x)
- Density / scale: 1x (from 0.5 to 2x)
- Opacity: 1 (from 0.2 to 1)
## What I need
1. Add it to my project with the same look and animation as the reference code: same sizes, colours, radii, shadows, timings and easing.
2. It is built with plain HTML and CSS (the reference wraps it in a React component with its CSS). If my project uses something else (Vue, Svelte, Astro, plain HTML…), translate it without losing any behaviour. If I use Tailwind, turn the styles into classes; if not, keep the CSS in its own file.
3. Expose the settings above as props (or CSS variables) with those values as defaults.
4. Make it work well on phones: nothing that depends only on hover, touch targets of at least 44 px and no overflow on 320 px screens.
5. Make it look right in light and dark mode.
6. Keep it accessible: semantic HTML, roles and aria-* where needed, visible focus and keyboard support.
7. Respect prefers-reduced-motion: with reduced motion, no big animations but the same end result.
## Reference code
```tsx
// @ts-nocheck
import { useEffect, useRef } from "react";
const css = `
.pt-uvq16-seigaiha {
position: relative;
width: 100%;
height: 100%;
overflow: hidden;
background-color: var(--bg);
container-type: size;
isolation: isolate;
}
.pt-uvq16-seigaiha>* {
opacity: var(--o);
}
@property --uvq16-gx {
syntax: "";
inherits: true;
initial-value: 50%;
}
@property --uvq16-gy {
syntax: "";
inherits: true;
initial-value: 50%;
}
.pt-uvq16-seigaiha {
background: var(--c1);
}
.pt-uvq16-seigaiha .tl {
position: absolute;
left: 0;
top: 0;
width: calc(100% * var(--d) + 80px);
height: calc(100% * var(--d));
transform-origin: 0 0;
scale: calc(1 / var(--d));
animation: uvq16-sg-dr calc(24s / var(--k)) linear infinite;
}
.pt-uvq16-seigaiha .f {
fill: var(--c1);
stroke: var(--c2);
stroke-width: 2.6;
}
.pt-uvq16-seigaiha .w {
fill: none;
stroke: var(--c2);
stroke-width: 2.6;
}
.pt-uvq16-seigaiha .w0 {
fill: var(--c2);
}
.pt-uvq16-seigaiha .gd {
position: absolute;
inset: 0;
-webkit-mask: radial-gradient(circle 32cqmin at var(--uvq16-gx) var(--uvq16-gy),#000,rgba(0,0,0,.55) 45%,transparent);
mask: radial-gradient(circle 32cqmin at var(--uvq16-gx) var(--uvq16-gy),#000,rgba(0,0,0,.55) 45%,transparent);
animation: uvq16-sg-g calc(14s / var(--k)) ease-in-out infinite;
}
.pt-uvq16-seigaiha .gd .f {
fill: color-mix(in srgb,var(--c1) 82%,var(--c3));
stroke: var(--c3);
}
.pt-uvq16-seigaiha .gd .w {
stroke: var(--c3);
}
.pt-uvq16-seigaiha .gd .w0 {
fill: var(--c3);
}
.pt-uvq16-seigaiha[data-on] .gd {
animation: none;
}
@keyframes uvq16-sg-dr {
to {
translate: calc(-80px / var(--d)) 0;
}
}
@keyframes uvq16-sg-g {
0%,100% {
--uvq16-gx: 22%;
--uvq16-gy: 30%;
}
33% {
--uvq16-gx: 76%;
--uvq16-gy: 24%;
}
66% {
--uvq16-gx: 58%;
--uvq16-gy: 78%;
}
}
@media (prefers-reduced-motion:reduce) {
.pt-uvq16-seigaiha .tl,.pt-uvq16-seigaiha .gd {
animation: none;
}
}
`;
export default function PatternUvq16Seigaiha() {
const ref = useRef(null);
useEffect(() => {
const el = ref.current;
if (!el) return;
const gd=el.querySelector(".gd");const mv=e=>{const r=el.getBoundingClientRect();if(!r.width)return;gd.style.setProperty("--uvq16-gx",((e.clientX-r.left)/r.width*100).toFixed(1)+"%");gd.style.setProperty("--uvq16-gy",((e.clientY-r.top)/r.height*100).toFixed(1)+"%");el.dataset.on="1"};
const lv=()=>{delete el.dataset.on;gd.style.removeProperty("--uvq16-gx");gd.style.removeProperty("--uvq16-gy")};el.addEventListener("pointermove",mv);el.addEventListener("pointerleave",lv);
return()=>{el.removeEventListener("pointermove",mv);el.removeEventListener("pointerleave",lv)};
}, []);
return (
<>
);
}
```
Give me the complete final code, ready to paste, and tell me in one line where to put it in my project.
````