Ghost/ghost/admin/app/styles/components/badges.css

/* Badges
/* ---------------------------------------------------------- */

.gh-badge {
    display: inline-block;
    padding: 3px 4px;
    color: var(--green-d2);
    font-size: 1.2rem;
    line-height: 1em;
    font-weight: 500;
    letter-spacing: 0.2px;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
    background: color-mod(var(--green) a(20%));
    border-radius: 3px;
    text-transform: uppercase;
}

.gh-badge-blue {
    background: var(--blue);
}

.gh-badge-red {
    color: var(--red);
    background: color-mod(var(--red) a(20%));
}

.gh-badge-purple {
    color: var(--purple);
    background: color-mod(var(--purple) a(20%));
}

.gh-badge-black {
    background: var(--darkgrey);
    color: var(--white);
}

.gh-badge-outline {
    border-color: color-mod(var(--midgrey) l(+35%));
    color: color-mod(var(--midgrey) l(+25%));
    font-weight: 400;
    background: transparent;
    box-shadow: none;
    text-shadow: none;
}