#1C1E03 · #261A01
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 96/100 (analogous) · Distinguishable 18/100 (hard to tell apart) · Match 81/100 (close). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Deep Lime and Deep Vivid Yellow are very close (ΔE 8). They have closely related hues (24° apart) and their lightness is similar, so they read as two same-weight colours.
Deep Lime text on Deep Vivid Yellow: 1.00:1 (Fail); Deep Vivid Yellow text on Deep Lime: 1.00:1 (Fail). Neither meets AA at body size — nudging one color to #828666 clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 96/100). 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 #828666 clears AA.
Their CIE76 ΔE is about 8 — very close.
close but visibly different (ΔE 8.5).
Explore each color: Deep Lime #1C1E03 · Deep Vivid Yellow #261A01 · Shades: Deep Lime shades · Deep Vivid Yellow shades · Contrast checker →