export const tint = (hex?: string | null, a = 0.18) => {
  if (!hex) return `rgba(37,99,235,${a})`
  const h = hex.replace("#", "")
  const v = h.length === 3 ? h.split("").map((c) => c + c).join("") : h
  const n = parseInt(v, 16)
  const r = (n >> 16) & 255,
    g = (n >> 8) & 255,
    b = n & 255
  return `rgba(${r},${g},${b},${a})`
}