What you're looking for is a list of lists.
$everlastingGreeN: #232553;
$vividRed: #343545;
// and many more
//and define those:
$colors: everlastingGreeN $everlastingGreeN, vividRed $vividRed;
@each $color in $colors {
&.#{nth($color, 1)} {
background: nth($color, 2);
&:hover {
background: darken(nth($color, 2), 10%);
}
}
}