#91C851 · #D495FF
Four independent scores (read the one that fits your goal): Readability 2/100 (fail) · Harmony 98/100 (complementary) · Distinguishable 71/100 (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.
Yellow Green and Light Vivid Indigo are very different (ΔE 125). They have near-opposite hues (172° apart) and their lightness is different, giving a clear light/dark split.
Yellow Green text on Light Vivid Indigo: 1.11:1 (Fail); Light Vivid Indigo text on Yellow Green: 1.11:1 (Fail). Neither meets AA at body size — nudging one color to #2D4B00 clears it.
Complementary — complementary — a recognised, balanced pairing (harmony 98/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.1:1, below the 4.5:1 minimum. Nudging one colour to #2D4B00 clears AA.
Their CIE76 ΔE is about 125 — very different.
clearly different colours (ΔE 125).
Explore each color: Yellow Green #91C851 · Light Vivid Indigo #D495FF · Shades: Yellow Green shades · Light Vivid Indigo shades · Contrast checker →