Tailwind colour finder
Distance is measured in Lab space — how eyes see colour — because plain RGB distance calls two dark colours 'close' when they clearly are not. A ΔE under ~2.3 is indistinguishable side by side.
indigo-600visually identical
#4f46e5 · ΔE 0.0
indigo-700
#4338ca · ΔE 8.4
violet-500
#8b5cf6 · ΔE 14.0
violet-600
#7c3aed · ΔE 14.4
blue-700
#1d4ed8 · ΔE 14.7
violet-700
#6d28d9 · ΔE 14.8
violet-800
#5b21b6 · ΔE 16.1
indigo-500
#6366f1 · ΔE 17.4