#1D2000 · #291B00
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 98/100 (analogous) · Distinguishable 18/100 (hard to tell apart) · Match 77/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Deep Vivid Lime and Deep Vivid Yellow are a clear pair (ΔE 11). They have distinctly different hues (26° apart) and their lightness is similar, so they read as two same-weight colours.
Deep Vivid Lime text on Deep Vivid Yellow: 1.01:1 (Fail); Deep Vivid Yellow text on Deep Vivid Lime: 1.01:1 (Fail). Neither meets AA at body size — nudging one color to #828863 clears it.
Analogous — analogous — 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 1.0:1, below the 4.5:1 minimum. Nudging one colour to #828863 clears AA.
Their CIE76 ΔE is about 11 — a clear pair.
clearly different colours (ΔE 11).
Explore each color: Deep Vivid Lime #1D2000 · Deep Vivid Yellow #291B00 · Shades: Deep Vivid Lime shades · Deep Vivid Yellow shades · Contrast checker →