#1F2000 · #20143F
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 79/100 (split-complementary) · Distinguishable 54/100 (somewhat similar) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Deep Vivid Lime and Deep Indigo are very different (ΔE 49). They have near-opposite hues (165° apart) and their lightness is similar, so they read as two same-weight colours.
Deep Vivid Lime text on Deep Indigo: 1.03:1 (Fail); Deep Indigo text on Deep Vivid Lime: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #838662 clears it.
Split-complementary — split-complementary — a recognised, balanced pairing (harmony 79/100). 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 #838662 clears AA.
Their CIE76 ΔE is about 49 — very different.
clearly different colours (ΔE 49).
Explore each color: Deep Vivid Lime #1F2000 · Deep Indigo #20143F · Shades: Deep Vivid Lime shades · Deep Indigo shades · Contrast checker →