#A987DE · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 38/100 (fail) · Harmony 68/100 (triadic (soft)) · Distinguishable 70/100 (easy to tell apart) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Indigo and White are very different (ΔE 63). They have distinctly different hues (97° apart) and their lightness is different, giving a clear light/dark split.
Indigo text on White: 2.91:1 (Fail); White text on Indigo: 2.91:1 (Fail). Neither meets AA at body size — nudging one color to #8866BB clears it.
Triadic (soft) — workable but not a textbook harmony (harmony 68/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 2.9:1, below the 4.5:1 minimum. Nudging one colour to #8866BB clears AA.
Their CIE76 ΔE is about 63 — very different.
clearly different colours (ΔE 63).
Explore each color: Indigo #A987DE · White #FFFFFF · Shades: Indigo shades · White shades · Contrast checker →