#A686EE · #E1802C
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 87/100 (triadic) · Distinguishable 100/100 (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.
Light Indigo and Peru are very different (ΔE 107). They have distinctly different hues (129° apart) and their lightness is different, giving a clear light/dark split.
Light Indigo text on Peru: 1.01:1 (Fail); Peru text on Light Indigo: 1.01:1 (Fail). Neither meets AA at body size — nudging one color to #411878 clears it.
Triadic — triadic — a recognised, balanced pairing (harmony 87/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.0:1, below the 4.5:1 minimum. Nudging one colour to #411878 clears AA.
Their CIE76 ΔE is about 107 — very different.
clearly different colours (ΔE 107).
Explore each color: Light Indigo #A686EE · Peru #E1802C · Shades: Light Indigo shades · Peru shades · Contrast checker →