@anatudor

With some trial and error
```
background: linear-gradient(#0000,#fff), linear-gradient(90deg,#54478c,#2c699a,#048ba8,#0db39e,#16db93,#83e377,#b9e769,#efea5a,#f1c453,#f29e4c);
background-blend-mode: saturation;
```

probably not the same output but it looks close to me.