Trying to set the primary color

Hello, I have found a website that generates code to change the theme colors as per below. I tried placing in SAAS folder as custom.scss but it's not taking effect, can you help, maybe i have the wrong filename or location. Code is below

/*------------------------------------

• COLOR primary
  ------------------------------------*/

$primary_t1: #0171bf;
$primary_t2: #00528c;
$primary_t3: #5fbdfe;
$primary_t4: #79c7fe;
$primary_t5: #002845;
$primary_t6: #00497d;
$primary_t7: #005b9b;
$primary_t8: #000a12;
$primary_t9: #8dd0fe;

$primary_shadow: rgba(1, 113, 191, 0.5);
$primary_text_color_dark_bright: #fff;

.alert-primary {
color: $primary_t5;
background-color: $primary_t9;
border-color: $primary_t4;
}

.alert-primary hr {
border-top-color: $primary_t3;
}

.alert-primary .alert-link {
color: $primary_t8;
}

.badge-primary {
color: $primary_text_color_dark_bright;
background-color: $primary_t1;
}

.badge-primary[href]:hover, .badge-primary[href]:focus {
color: $primary_text_color_dark_bright;
background-color: $primary_t2;
}

.bg-primary {
background-color: $primary_t1 !important;
}

a.bg-primary:hover, a.bg-primary:focus,
button.bg-primary:hover,
button.bg-primary:focus {
background-color: $primary_t2 !important;
}

.border-primary {
border-color: $primary_t1 !important;
}

.btn-primary {
color: $primary_text_color_dark_bright;
background-color: $primary_t1;
border-color: $primary_t1;
}

.btn-primary:hover {
color: $primary_text_color_dark_bright;
background-color: $primary_t7;
border-color: $primary_t2;
}

.btn-primary:focus, .btn-primary.focus {
box-shadow: 0 0 0 0.2rem $primary_shadow;
}

.btn-primary.disabled, .btn-primary:disabled {
color: $primary_text_color_dark_bright;
background-color: $primary_t1;
border-color: $primary_t1;
}

.btn-primary:not(:disabled):not(.disabled):active, .btn-primary:not(:disabled):not(.disabled).active, .show > .btn-primary.dropdown-toggle {
color: $primary_text_color_dark_bright;
background-color: $primary_t2;
border-color: $primary_t6;
}

.btn-primary:not(:disabled):not(.disabled):active:focus, .btn-primary:not(:disabled):not(.disabled).active:focus, .show > .btn-primary.dropdown-toggle:focus {
box-shadow: 0 0 0 0.2rem $primary_shadow;
}

.btn-outline-primary {
color: $primary_t1;
background-color: transparent;
border-color: $primary_t1;
}

.btn-outline-primary:hover {
color: $primary_text_color_dark_bright;
background-color: $primary_t1;
border-color: $primary_t1;
}

.btn-outline-primary:focus, .btn-outline-primary.focus {
box-shadow: 0 0 0 0.2rem $primary_shadow;
}

.btn-outline-primary.disabled, .btn-outline-primary:disabled {
color: $primary_t1;
background-color: transparent;
}

.btn-outline-primary:not(:disabled):not(.disabled):active, .btn-outline-primary:not(:disabled):not(.disabled).active, .show > .btn-outline-primary.dropdown-toggle {
color: $primary_text_color_dark_bright;
background-color: $primary_t1;
border-color: $primary_t1;
}

.btn-outline-primary:not(:disabled):not(.disabled):active:focus, .btn-outline-primary:not(:disabled):not(.disabled).active:focus, .show > .btn-outline-primary.dropdown-toggle:focus {
box-shadow: 0 0 0 0.2rem $primary_shadow;
}

.list-group-item-primary {
color: $primary_t5;
background-color: $primary_t4;
}

.list-group-item-primary.list-group-item-action:hover, .list-group-item-primary.list-group-item-action:focus {
color: $primary_t5;
background-color: $primary_t3;
}

.list-group-item-primary.list-group-item-action.active {
color: $primary_text_color_dark_bright;
background-color: $primary_t5;
border-color: $primary_t5;
}

.table-primary,
.table-primary > th,
.table-primary > td {
background-color: $primary_t4;
}

.table-hover .table-primary:hover {
background-color: $primary_t3;
}

.table-hover .table-primary:hover > td,
.table-hover .table-primary:hover > th {
background-color: $primary_t3;
}

.text-primary {
color: $primary_t1 !important;
}

a.text-primary:hover, a.text-primary:focus {
color: $primary_t2 !important;
}