<h3 class="hover">Hover Me</h3>

.hover {
  --c: #1095c1; /* the color */
  
  color: #0000;
  background: 
    linear-gradient(90deg,#fff 50%,var(--c) 0) calc(100% - var(--_p,0%))/200%,
    linear-gradient(var(--c) 0 0) 0% 100%/var(--_p,0%) no-repeat,
    var(--_c,#0000);
  -webkit-background-clip: text,padding-box,padding-box;
          background-clip: text,padding-box,padding-box;
  transition: 0s ,color .5s,background-color .5s;
}
.hover:hover {
  color: #fff;
  --_c: var(--c);
  --_p: 100%;
  transition: 0.5s,color 0s .5s,background-color 0s .5s;
}


body {
  height: 100vh;
  margin: 0;
  display: grid;
  grid-template-columns: auto auto;
  gap: 20px;
  place-content: center;
  align-items: center;
}
h3 {
  font-family: system-ui, sans-serif;
  font-size: 3rem;
  margin:0;
  cursor: pointer;
  padding: 0 .1em;
}