ColourPop Tie a Knot is a warm fuchsia with a pearl finish that is limited edition and retails for $4.50. In comparison, Make Up For Ever D850 Nitro Pink is a warm fuchsia with a sparkle finish that is discontinued and retails for $21.00.
Make Up For Ever D850 Nitro Pink is 85% similar — it is more shimmery, lighter, warmer.